text: /*
   * Window related functions
   *
   * Copyright 1993, 1994 Alexandre Julliard
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "config.h"
  #include "wine/port.h"
  
  #include <assert.h>
  #include <stdarg.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include "windef.h"
  #include "winbase.h"
  #include "winver.h"
  #include "wine/server.h"
  #include "wine/unicode.h"
  #include "wine/asm.h"
  #include "win.h"
  #include "user_private.h"
  #include "controls.h"
  #include "winerror.h"
  #include "wine/gdi_driver.h"
  #include "wine/debug.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(win);
  
  #define NB_USER_HANDLES  ((LAST_USER_HANDLE - FIRST_USER_HANDLE + 1) >> 1)
  #define USER_HANDLE_TO_INDEX(hwnd) ((LOWORD(hwnd) - FIRST_USER_HANDLE) >> 1)
  
  static DWORD process_layout = ~0u;
  
  static struct list window_surfaces = LIST_INIT( window_surfaces );
  
  static CRITICAL_SECTION surfaces_section;
  static CRITICAL_SECTION_DEBUG critsect_debug =
  {
      0, 0, &surfaces_section,
      { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
        0, 0, { (DWORD_PTR)(__FILE__ ": surfaces_section") }
  };
  static CRITICAL_SECTION surfaces_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  
  /**********************************************************************/
  
  /* helper for Get/SetWindowLong */
  static inline LONG_PTR get_win_data( const void *ptr, UINT size )
  {
      if (size == sizeof(WORD))
      {
          WORD ret;
          memcpy( &ret, ptr, sizeof(ret) );
          return ret;
      }
      else if (size == sizeof(DWORD))
      {
          DWORD ret;
          memcpy( &ret, ptr, sizeof(ret) );
          return ret;
      }
      else
      {
          LONG_PTR ret;
          memcpy( &ret, ptr, sizeof(ret) );
          return ret;
      }
  }
  
  /* helper for Get/SetWindowLong */
  static inline void set_win_data( void *ptr, LONG_PTR val, UINT size )
  {
      if (size == sizeof(WORD))
      {
          WORD newval = val;
          memcpy( ptr, &newval, sizeof(newval) );
      }
      else if (size == sizeof(DWORD))
      {
          DWORD newval = val;
          memcpy( ptr, &newval, sizeof(newval) );
      }
      else
      {
          memcpy( ptr, &val, sizeof(val) );
      }
  }
  
  
  static void *user_handles[NB_USER_HANDLES];
  
  /***********************************************************************
   *           alloc_user_handle
   */
  HANDLE alloc_user_handle( struct user_object *ptr, enum user_obj_type type )
  {
      HANDLE handle = 0;
  
      SERVER_START_REQ( alloc_user_handle )
      {
          if (!wine_server_call_err( req )) handle = wine_server_ptr_handle( reply->handle );
      }
      SERVER_END_REQ;
  
      if (handle)
      {
          UINT index = USER_HANDLE_TO_INDEX( handle );
  
          assert( index < NB_USER_HANDLES );
          ptr->handle = handle;
          ptr->type = type;
          InterlockedExchangePointer( &user_handles[index], ptr );
      }
      return handle;
  }
  
  
  /***********************************************************************
   *           get_user_handle_ptr
   */
  void *get_user_handle_ptr( HANDLE handle, enum user_obj_type type )
  {
      struct user_object *ptr;
      WORD index = USER_HANDLE_TO_INDEX( handle );
  
      if (index >= NB_USER_HANDLES) return NULL;
  
      USER_Lock();
      if ((ptr = user_handles[index]))
      {
          if (ptr->type == type &&
              ((UINT)(UINT_PTR)ptr->handle == (UINT)(UINT_PTR)handle ||
               !HIWORD(handle) || HIWORD(handle) == 0xffff))
              return ptr;
          ptr = NULL;
      }
      else ptr = OBJ_OTHER_PROCESS;
      USER_Unlock();
      return ptr;
  }
  
  
  /***********************************************************************
   *           release_user_handle_ptr
   */
  void release_user_handle_ptr( void *ptr )
  {
      assert( ptr && ptr != OBJ_OTHER_PROCESS );
      USER_Unlock();
  }
  
  
  /***********************************************************************
   *           free_user_handle
   */
  void *free_user_handle( HANDLE handle, enum user_obj_type type )
  {
      struct user_object *ptr;
      WORD index = USER_HANDLE_TO_INDEX( handle );
  
      if ((ptr = get_user_handle_ptr( handle, type )) && ptr != OBJ_OTHER_PROCESS)
      {
          SERVER_START_REQ( free_user_handle )
          {
              req->handle = wine_server_user_handle( handle );
              if (wine_server_call( req )) ptr = NULL;
              else InterlockedCompareExchangePointer( &user_handles[index], NULL, ptr );
          }
          SERVER_END_REQ;
          USER_Unlock();
      }
      return ptr;
  }
  
  
  /***********************************************************************
   *           create_window_handle
   *
   * Create a window handle with the server.
   */
  static WND *create_window_handle( HWND parent, HWND owner, LPCWSTR name,
                                    HINSTANCE instance, BOOL unicode )
  {
      WORD index;
      WND *win;
      HWND handle = 0, full_parent = 0, full_owner = 0;
      struct tagCLASS *class = NULL;
      int extra_bytes = 0;
      DPI_AWARENESS awareness = GetAwarenessFromDpiAwarenessContext( GetThreadDpiAwarenessContext() );
      UINT dpi = 0;
  
      SERVER_START_REQ( create_window )
      {
          req->parent   = wine_server_user_handle( parent );
          req->owner    = wine_server_user_handle( owner );
          req->instance = wine_server_client_ptr( instance );
          req->dpi      = GetDpiForSystem();
          req->awareness = awareness;
          if (!(req->atom = get_int_atom_value( name )) && name)
              wine_server_add_data( req, name, strlenW(name)*sizeof(WCHAR) );
          if (!wine_server_call_err( req ))
          {
              handle      = wine_server_ptr_handle( reply->handle );
              full_parent = wine_server_ptr_handle( reply->parent );
              full_owner  = wine_server_ptr_handle( reply->owner );
              extra_bytes = reply->extra;
              dpi         = reply->dpi;
              awareness   = reply->awareness;
              class       = wine_server_get_ptr( reply->class_ptr );
          }
      }
      SERVER_END_REQ;
  
      if (!handle)
      {
          WARN( "error %d creating window\n", GetLastError() );
          return NULL;
      }
  
      if (!(win = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
                             sizeof(WND) + extra_bytes - sizeof(win->wExtra) )))
      {
          SERVER_START_REQ( destroy_window )
          {
              req->handle = wine_server_user_handle( handle );
              wine_server_call( req );
          }
          SERVER_END_REQ;
          SetLastError( ERROR_NOT_ENOUGH_MEMORY );
          return NULL;
      }
  
      if (!parent)  /* if parent is 0 we don't have a desktop window yet */
      {
          struct user_thread_info *thread_info = get_user_thread_info();
  
          if (name == (LPCWSTR)DESKTOP_CLASS_ATOM)
          {
              if (!thread_info->top_window) thread_info->top_window = full_parent ? full_parent : handle;
              else assert( full_parent == thread_info->top_window );
              if (full_parent && !USER_Driver->pCreateDesktopWindow( thread_info->top_window ))
                  ERR( "failed to create desktop window\n" );
          }
          else  /* HWND_MESSAGE parent */
          {
              if (!thread_info->msg_window && !full_parent) thread_info->msg_window = handle;
          }
      }
  
      USER_Lock();
  
      index = USER_HANDLE_TO_INDEX(handle);
      assert( index < NB_USER_HANDLES );
      win->obj.handle = handle;
      win->obj.type   = USER_WINDOW;
      win->parent     = full_parent;
      win->owner      = full_owner;
      win->class      = class;
      win->winproc    = get_class_winproc( class );
      win->cbWndExtra = extra_bytes;
      win->dpi        = dpi;
      win->dpi_awareness = awareness;
      InterlockedExchangePointer( &user_handles[index], win );
      if (WINPROC_IsUnicode( win->winproc, unicode )) win->flags |= WIN_ISUNICODE;
      return win;
  }
  
  
  /***********************************************************************
   *           free_window_handle
   *
   * Free a window handle.
   */
  static void free_window_handle( HWND hwnd )
  {
      struct user_object *ptr;
      WORD index = USER_HANDLE_TO_INDEX(hwnd);
  
      if ((ptr = get_user_handle_ptr( hwnd, USER_WINDOW )) && ptr != OBJ_OTHER_PROCESS)
      {
          SERVER_START_REQ( destroy_window )
          {
              req->handle = wine_server_user_handle( hwnd );
              wine_server_call( req );
              InterlockedCompareExchangePointer( &user_handles[index], NULL, ptr );
          }
          SERVER_END_REQ;
          USER_Unlock();
          HeapFree( GetProcessHeap(), 0, ptr );
      }
  }
  
  
  /*******************************************************************
   *           list_window_children
   *
   * Build an array of the children of a given window. The array must be
   * freed with HeapFree. Returns NULL when no windows are found.
   */
  static HWND *list_window_children( HDESK desktop, HWND hwnd, LPCWSTR class, DWORD tid )
  {
      HWND *list;
      int i, size = 128;
      ATOM atom = get_int_atom_value( class );
  
      /* empty class is not the same as NULL class */
      if (!atom && class && !class[0]) return NULL;
  
      for (;;)
      {
          int count = 0;
  
          if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) break;
  
          SERVER_START_REQ( get_window_children )
          {
              req->desktop = wine_server_obj_handle( desktop );
              req->parent = wine_server_user_handle( hwnd );
              req->tid = tid;
              req->atom = atom;
              if (!atom && class) wine_server_add_data( req, class, strlenW(class)*sizeof(WCHAR) );
              wine_server_set_reply( req, list, (size-1) * sizeof(user_handle_t) );
              if (!wine_server_call( req )) count = reply->count;
          }
          SERVER_END_REQ;
          if (count && count < size)
          {
              /* start from the end since HWND is potentially larger than user_handle_t */
              for (i = count - 1; i >= 0; i--)
                  list[i] = wine_server_ptr_handle( ((user_handle_t *)list)[i] );
              list[count] = 0;
              return list;
          }
          HeapFree( GetProcessHeap(), 0, list );
          if (!count) break;
          size = count + 1;  /* restart with a large enough buffer */
      }
      return NULL;
  }
  
  
  /*******************************************************************
   *           list_window_parents
   *
   * Build an array of all parents of a given window, starting with
   * the immediate parent. The array must be freed with HeapFree.
   */
  static HWND *list_window_parents( HWND hwnd )
  {
      WND *win;
      HWND current, *list;
      int i, pos = 0, size = 16, count;
  
      if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) return NULL;
  
      current = hwnd;
      for (;;)
      {
          if (!(win = WIN_GetPtr( current ))) goto empty;
          if (win == WND_OTHER_PROCESS) break;  /* need to do it the hard way */
          if (win == WND_DESKTOP)
          {
              if (!pos) goto empty;
              list[pos] = 0;
              return list;
          }
          list[pos] = current = win->parent;
          WIN_ReleasePtr( win );
          if (!current) return list;
          if (++pos == size - 1)
          {
              /* need to grow the list */
              HWND *new_list = HeapReAlloc( GetProcessHeap(), 0, list, (size+16) * sizeof(HWND) );
              if (!new_list) goto empty;
              list = new_list;
              size += 16;
          }
      }
  
      /* at least one parent belongs to another process, have to query the server */
  
      for (;;)
      {
          count = 0;
          SERVER_START_REQ( get_window_parents )
          {
              req->handle = wine_server_user_handle( hwnd );
              wine_server_set_reply( req, list, (size-1) * sizeof(user_handle_t) );
              if (!wine_server_call( req )) count = reply->count;
          }
          SERVER_END_REQ;
          if (!count) goto empty;
          if (size > count)
          {
              /* start from the end since HWND is potentially larger than user_handle_t */
              for (i = count - 1; i >= 0; i--)
                  list[i] = wine_server_ptr_handle( ((user_handle_t *)list)[i] );
              list[count] = 0;
              return list;
          }
          HeapFree( GetProcessHeap(), 0, list );
          size = count + 1;
          if (!(list = HeapAlloc( GetProcessHeap(), 0, size * sizeof(HWND) ))) return NULL;
      }
  
   empty:
      HeapFree( GetProcessHeap(), 0, list );
      return NULL;
  }
  
  
  /*******************************************************************
   *           send_parent_notify
   */
  static void send_parent_notify( HWND hwnd, UINT msg )
  {
      if ((GetWindowLongW( hwnd, GWL_STYLE ) & (WS_CHILD | WS_POPUP)) == WS_CHILD &&
          !(GetWindowLongW( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY))
      {
          HWND parent = GetParent(hwnd);
          if (parent && parent != GetDesktopWindow())
              SendMessageW( parent, WM_PARENTNOTIFY,
                            MAKEWPARAM( msg, GetWindowLongPtrW( hwnd, GWLP_ID )), (LPARAM)hwnd );
      }
  }
  
  
  /*******************************************************************
   *		update_window_state
   *
   * Trigger an update of the window's driver state and surface.
   */
  static void update_window_state( HWND hwnd )
  {
      DPI_AWARENESS_CONTEXT context;
      RECT window_rect, client_rect, valid_rects[2];
  
      context = SetThreadDpiAwarenessContext( GetWindowDpiAwarenessContext( hwnd ));
      WIN_GetRectangles( hwnd, COORDS_PARENT, &window_rect, &client_rect );
      valid_rects[0] = valid_rects[1] = client_rect;
      set_window_pos( hwnd, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOCLIENTSIZE | SWP_NOCLIENTMOVE |
                      SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW,
                      &window_rect, &client_rect, valid_rects );
      SetThreadDpiAwarenessContext( context );
  }
  
  
  /*******************************************************************
   *		get_server_window_text
   *
   * Retrieve the window text from the server.
   */
  static data_size_t get_server_window_text( HWND hwnd, WCHAR *text, data_size_t count )
  {
      data_size_t len = 0, needed = 0;
  
      SERVER_START_REQ( get_window_text )
      {
          req->handle = wine_server_user_handle( hwnd );
          if (count) wine_server_set_reply( req, text, (count - 1) * sizeof(WCHAR) );
          if (!wine_server_call_err( req ))
          {
              needed = reply->length;
              len = wine_server_reply_size(reply);
          }
      }
      SERVER_END_REQ;
      if (text) text[len / sizeof(WCHAR)] = 0;
      return needed;
  }
  
  
  /*******************************************************************
   *           get_hwnd_message_parent
   *
   * Return the parent for HWND_MESSAGE windows.
   */
  HWND get_hwnd_message_parent(void)
  {
      struct user_thread_info *thread_info = get_user_thread_info();
  
      if (!thread_info->msg_window) GetDesktopWindow();  /* trigger creation */
      return thread_info->msg_window;
  }
  
  
  /*******************************************************************
   *           is_desktop_window
   *
   * Check if window is the desktop or the HWND_MESSAGE top parent.
   */
  BOOL is_desktop_window( HWND hwnd )
  {
      struct user_thread_info *thread_info = get_user_thread_info();
  
      if (!hwnd) return FALSE;
      if (hwnd == thread_info->top_window) return TRUE;
      if (hwnd == thread_info->msg_window) return TRUE;
  
      if (!HIWORD(hwnd) || HIWORD(hwnd) == 0xffff)
      {
          if (LOWORD(thread_info->top_window) == LOWORD(hwnd)) return TRUE;
          if (LOWORD(thread_info->msg_window) == LOWORD(hwnd)) return TRUE;
      }
      return FALSE;
  }
  
  
  /*******************************************************************
   * Dummy window surface for windows that shouldn't get painted.
   */
  
  static void dummy_surface_lock( struct window_surface *window_surface )
  {
      /* nothing to do */
  }
  
  static void dummy_surface_unlock( struct window_surface *window_surface )
  {
      /* nothing to do */
  }
  
  static void *dummy_surface_get_bitmap_info( struct window_surface *window_surface, BITMAPINFO *info )
  {
      static DWORD dummy_data;
  
      info->bmiHeader.biSize          = sizeof( info->bmiHeader );
      info->bmiHeader.biWidth         = dummy_surface.rect.right;
      info->bmiHeader.biHeight        = dummy_surface.rect.bottom;
      info->bmiHeader.biPlanes        = 1;
      info->bmiHeader.biBitCount      = 32;
      info->bmiHeader.biCompression   = BI_RGB;
      info->bmiHeader.biSizeImage     = 0;
      info->bmiHeader.biXPelsPerMeter = 0;
      info->bmiHeader.biYPelsPerMeter = 0;
      info->bmiHeader.biClrUsed       = 0;
      info->bmiHeader.biClrImportant  = 0;
      return &dummy_data;
  }
  
  static RECT *dummy_surface_get_bounds( struct window_surface *window_surface )
  {
      static RECT dummy_bounds;
      return &dummy_bounds;
  }
  
  static void dummy_surface_set_region( struct window_surface *window_surface, HRGN region )
  {
      /* nothing to do */
  }
  
  static void dummy_surface_flush( struct window_surface *window_surface )
  {
      /* nothing to do */
  }
  
  static void dummy_surface_destroy( struct window_surface *window_surface )
  {
      /* nothing to do */
  }
  
  static const struct window_surface_funcs dummy_surface_funcs =
  {
      dummy_surface_lock,
      dummy_surface_unlock,
      dummy_surface_get_bitmap_info,
      dummy_surface_get_bounds,
      dummy_surface_set_region,
      dummy_surface_flush,
      dummy_surface_destroy
  };
  
  struct window_surface dummy_surface = { &dummy_surface_funcs, { NULL, NULL }, 1, { 0, 0, 1, 1 } };
  
  
  /*******************************************************************
   *           register_window_surface
   *
   * Register a window surface in the global list, possibly replacing another one.
   */
  void register_window_surface( struct window_surface *old, struct window_surface *new )
  {
      if (old == new) return;
      EnterCriticalSection( &surfaces_section );
      if (old && old != &dummy_surface) list_remove( &old->entry );
      if (new && new != &dummy_surface) list_add_tail( &window_surfaces, &new->entry );
      LeaveCriticalSection( &surfaces_section );
  }
  
  
  /*******************************************************************
   *           flush_window_surfaces
   *
   * Flush pending output from all window surfaces.
   */
  void flush_window_surfaces( BOOL idle )
  {
      static DWORD last_idle;
      DWORD now;
      struct window_surface *surface;
  
      EnterCriticalSection( &surfaces_section );
      now = GetTickCount();
      if (idle) last_idle = now;
      /* if not idle, we only flush if there's evidence that the app never goes idle */
      else if ((int)(now - last_idle) < 50) goto done;
  
      LIST_FOR_EACH_ENTRY( surface, &window_surfaces, struct window_surface, entry )
          surface->funcs->flush( surface );
  done:
      LeaveCriticalSection( &surfaces_section );
  }
  
  
  /***********************************************************************
   *           WIN_GetPtr
   *
   * Return a pointer to the WND structure if local to the process,
   * or WND_OTHER_PROCESS if handle may be valid in other process.
   * If ret value is a valid pointer, it must be released with WIN_ReleasePtr.
   */
  WND *WIN_GetPtr( HWND hwnd )
  {
      WND *ptr;
  
      if ((ptr = get_user_handle_ptr( hwnd, USER_WINDOW )) == WND_OTHER_PROCESS)
      {
          if (is_desktop_window( hwnd )) ptr = WND_DESKTOP;
      }
      return ptr;
  }
  
  
  /***********************************************************************
   *           WIN_IsCurrentProcess
   *
   * Check whether a given window belongs to the current process (and return the full handle).
   */
  HWND WIN_IsCurrentProcess( HWND hwnd )
  {
      WND *ptr;
      HWND ret;
  
      if (!(ptr = WIN_GetPtr( hwnd )) || ptr == WND_OTHER_PROCESS || ptr == WND_DESKTOP) return 0;
      ret = ptr->obj.handle;
      WIN_ReleasePtr( ptr );
      return ret;
  }
  
  
  /***********************************************************************
   *           WIN_IsCurrentThread
   *
   * Check whether a given window belongs to the current thread (and return the full handle).
   */
  HWND WIN_IsCurrentThread( HWND hwnd )
  {
      WND *ptr;
      HWND ret = 0;
  
      if (!(ptr = WIN_GetPtr( hwnd )) || ptr == WND_OTHER_PROCESS || ptr == WND_DESKTOP) return 0;
      if (ptr->tid == GetCurrentThreadId()) ret = ptr->obj.handle;
      WIN_ReleasePtr( ptr );
      return ret;
  }
  
  
  /***********************************************************************
   *           win_set_flags
   *
   * Set the flags of a window and return the previous value.
   */
  UINT win_set_flags( HWND hwnd, UINT set_mask, UINT clear_mask )
  {
      UINT ret;
      WND *ptr = WIN_GetPtr( hwnd );
  
      if (!ptr || ptr == WND_OTHER_PROCESS || ptr == WND_DESKTOP) return 0;
      ret = ptr->flags;
      ptr->flags = (ret & ~clear_mask) | set_mask;
      WIN_ReleasePtr( ptr );
      return ret;
  }
  
  
  /***********************************************************************
   *           WIN_GetFullHandle
   *
   * Convert a possibly truncated window handle to a full 32-bit handle.
   */
  HWND WIN_GetFullHandle( HWND hwnd )
  {
      WND *ptr;
  
      if (!hwnd || (ULONG_PTR)hwnd >> 16) return hwnd;
      if (LOWORD(hwnd) <= 1 || LOWORD(hwnd) == 0xffff) return hwnd;
      /* do sign extension for -2 and -3 */
      if (LOWORD(hwnd) >= (WORD)-3) return (HWND)(LONG_PTR)(INT16)LOWORD(hwnd);
  
      if (!(ptr = WIN_GetPtr( hwnd ))) return hwnd;
  
      if (ptr == WND_DESKTOP)
      {
          if (LOWORD(hwnd) == LOWORD(GetDesktopWindow())) return GetDesktopWindow();
          else return get_hwnd_message_parent();
      }
  
      if (ptr != WND_OTHER_PROCESS)
      {
          hwnd = ptr->obj.handle;
          WIN_ReleasePtr( ptr );
      }
      else  /* may belong to another process */
      {
          SERVER_START_REQ( get_window_info )
          {
              req->handle = wine_server_user_handle( hwnd );
              if (!wine_server_call_err( req )) hwnd = wine_server_ptr_handle( reply->full_handle );
          }
          SERVER_END_REQ;
      }
      return hwnd;
  }
  
  
  /***********************************************************************
   *           WIN_SetOwner
   *
   * Change the owner of a window.
   */
  static HWND WIN_SetOwner( HWND hwnd, HWND owner )
  {
      WND *win = WIN_GetPtr( hwnd );
      HWND ret = 0;
  
      if (!win || win == WND_DESKTOP) return 0;
      if (win == WND_OTHER_PROCESS)
      {
          if (IsWindow(hwnd)) ERR( "cannot set owner %p on other process window %p\n", owner, hwnd );
          return 0;
      }
      SERVER_START_REQ( set_window_owner )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->owner  = wine_server_user_handle( owner );
          if (!wine_server_call( req ))
          {
              win->owner = wine_server_ptr_handle( reply->full_owner );
              ret = wine_server_ptr_handle( reply->prev_owner );
          }
      }
      SERVER_END_REQ;
      WIN_ReleasePtr( win );
      return ret;
  }
  
  
  /***********************************************************************
   *           WIN_SetStyle
   *
   * Change the style of a window.
   */
  ULONG WIN_SetStyle( HWND hwnd, ULONG set_bits, ULONG clear_bits )
  {
      BOOL ok, made_visible = FALSE;
      STYLESTRUCT style;
      WND *win = WIN_GetPtr( hwnd );
  
      if (!win || win == WND_DESKTOP) return 0;
      if (win == WND_OTHER_PROCESS)
      {
          if (IsWindow(hwnd))
              return SendMessageW(hwnd, WM_WINE_SETSTYLE, set_bits, clear_bits);
          return 0;
      }
      style.styleOld = win->dwStyle;
      style.styleNew = (win->dwStyle | set_bits) & ~clear_bits;
      if (style.styleNew == style.styleOld)
      {
          WIN_ReleasePtr( win );
          return style.styleNew;
      }
      SERVER_START_REQ( set_window_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->flags  = SET_WIN_STYLE;
          req->style  = style.styleNew;
          req->extra_offset = -1;
          if ((ok = !wine_server_call( req )))
          {
              style.styleOld = reply->old_style;
              win->dwStyle = style.styleNew;
          }
      }
      SERVER_END_REQ;
  
      if (ok && ((style.styleOld ^ style.styleNew) & WS_VISIBLE))
      {
          made_visible = (style.styleNew & WS_VISIBLE) != 0;
          invalidate_dce( win, NULL );
      }
      WIN_ReleasePtr( win );
  
      if (!ok) return 0;
  
      USER_Driver->pSetWindowStyle( hwnd, GWL_STYLE, &style );
      if (made_visible) update_window_state( hwnd );
  
      return style.styleOld;
  }
  
  
  /***********************************************************************
   *           WIN_GetRectangles
   *
   * Get the window and client rectangles.
   */
  BOOL WIN_GetRectangles( HWND hwnd, enum coords_relative relative, RECT *rectWindow, RECT *rectClient )
  {
      WND *win = WIN_GetPtr( hwnd );
      BOOL ret = TRUE;
  
      if (!win)
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return FALSE;
      }
      if (win == WND_DESKTOP)
      {
          RECT rect;
          rect.left = rect.top = 0;
          if (hwnd == get_hwnd_message_parent())
          {
              rect.right  = 100;
              rect.bottom = 100;
              rect = rect_win_to_thread_dpi( hwnd, rect );
          }
          else
          {
              rect.right  = GetSystemMetrics(SM_CXSCREEN);
              rect.bottom = GetSystemMetrics(SM_CYSCREEN);
          }
          if (rectWindow) *rectWindow = rect;
          if (rectClient) *rectClient = rect;
          return TRUE;
      }
      if (win != WND_OTHER_PROCESS)
      {
          RECT window_rect = win->window_rect, client_rect = win->client_rect;
  
          switch (relative)
          {
          case COORDS_CLIENT:
              OffsetRect( &window_rect, -win->client_rect.left, -win->client_rect.top );
              OffsetRect( &client_rect, -win->client_rect.left, -win->client_rect.top );
              if (win->dwExStyle & WS_EX_LAYOUTRTL)
                  mirror_rect( &win->client_rect, &window_rect );
              break;
          case COORDS_WINDOW:
              OffsetRect( &window_rect, -win->window_rect.left, -win->window_rect.top );
              OffsetRect( &client_rect, -win->window_rect.left, -win->window_rect.top );
              if (win->dwExStyle & WS_EX_LAYOUTRTL)
                  mirror_rect( &win->window_rect, &client_rect );
              break;
          case COORDS_PARENT:
              if (win->parent)
              {
                  WND *parent = WIN_GetPtr( win->parent );
                  if (parent == WND_DESKTOP) break;
                  if (!parent || parent == WND_OTHER_PROCESS)
                  {
                      WIN_ReleasePtr( win );
                      goto other_process;
                  }
                  if (parent->flags & WIN_CHILDREN_MOVED)
                  {
                      WIN_ReleasePtr( parent );
                      WIN_ReleasePtr( win );
                      goto other_process;
                  }
                  if (parent->dwExStyle & WS_EX_LAYOUTRTL)
                  {
                      mirror_rect( &parent->client_rect, &window_rect );
                      mirror_rect( &parent->client_rect, &client_rect );
                  }
                  WIN_ReleasePtr( parent );
              }
              break;
          case COORDS_SCREEN:
              while (win->parent)
              {
                  WND *parent = WIN_GetPtr( win->parent );
                  if (parent == WND_DESKTOP) break;
                  if (!parent || parent == WND_OTHER_PROCESS)
                  {
                      WIN_ReleasePtr( win );
                      goto other_process;
                  }
                  WIN_ReleasePtr( win );
                  if (parent->flags & WIN_CHILDREN_MOVED)
                  {
                      WIN_ReleasePtr( parent );
                      goto other_process;
                  }
                  win = parent;
                  if (win->parent)
                  {
                      OffsetRect( &window_rect, win->client_rect.left, win->client_rect.top );
                      OffsetRect( &client_rect, win->client_rect.left, win->client_rect.top );
                  }
              }
              break;
          }
          if (rectWindow) *rectWindow = rect_win_to_thread_dpi( hwnd, window_rect );
          if (rectClient) *rectClient = rect_win_to_thread_dpi( hwnd, client_rect );
          WIN_ReleasePtr( win );
          return TRUE;
      }
  
  other_process:
      SERVER_START_REQ( get_window_rectangles )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->relative = relative;
          req->dpi = get_thread_dpi();
          if ((ret = !wine_server_call_err( req )))
          {
              if (rectWindow)
              {
                  rectWindow->left   = reply->window.left;
                  rectWindow->top    = reply->window.top;
                  rectWindow->right  = reply->window.right;
                  rectWindow->bottom = reply->window.bottom;
              }
              if (rectClient)
              {
                  rectClient->left   = reply->client.left;
                  rectClient->top    = reply->client.top;
                  rectClient->right  = reply->client.right;
                  rectClient->bottom = reply->client.bottom;
              }
          }
      }
      SERVER_END_REQ;
      return ret;
  }
  
  
  /***********************************************************************
   *           WIN_DestroyWindow
   *
   * Destroy storage associated to a window. "Internals" p.358
   */
  LRESULT WIN_DestroyWindow( HWND hwnd )
  {
      WND *wndPtr;
      HWND *list;
      HMENU menu = 0, sys_menu;
      struct window_surface *surface;
  
      TRACE("%p\n", hwnd );
  
      /* destroy default IME window */
      if (win_set_flags( hwnd, 0, WIN_HAS_IME_WIN ) & WIN_HAS_IME_WIN)
      {
          TRACE("unregister IME window for %p\n", hwnd);
          imm_unregister_window( hwnd );
      }
  
      /* free child windows */
      if ((list = WIN_ListChildren( hwnd )))
      {
          int i;
          for (i = 0; list[i]; i++)
          {
              if (WIN_IsCurrentThread( list[i] )) WIN_DestroyWindow( list[i] );
              else SendNotifyMessageW( list[i], WM_WINE_DESTROYWINDOW, 0, 0 );
          }
          HeapFree( GetProcessHeap(), 0, list );
      }
  
      /* Unlink now so we won't bother with the children later on */
      SERVER_START_REQ( set_parent )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->parent = 0;
          wine_server_call( req );
      }
      SERVER_END_REQ;
  
      /*
       * Send the WM_NCDESTROY to the window being destroyed.
       */
      SendMessageW( hwnd, WM_NCDESTROY, 0, 0 );
  
      /* FIXME: do we need to fake QS_MOUSEMOVE wakebit? */
  
      /* free resources associated with the window */
  
      if (!(wndPtr = WIN_GetPtr( hwnd )) || wndPtr == WND_OTHER_PROCESS) return 0;
      if ((wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) != WS_CHILD)
          menu = (HMENU)wndPtr->wIDmenu;
      sys_menu = wndPtr->hSysMenu;
      free_dce( wndPtr->dce, hwnd );
      wndPtr->dce = NULL;
      HeapFree( GetProcessHeap(), 0, wndPtr->text );
      wndPtr->text = NULL;
      HeapFree( GetProcessHeap(), 0, wndPtr->pScroll );
      wndPtr->pScroll = NULL;
      DestroyIcon( wndPtr->hIconSmall2 );
      surface = wndPtr->surface;
      wndPtr->surface = NULL;
      WIN_ReleasePtr( wndPtr );
  
      if (menu) DestroyMenu( menu );
      if (sys_menu) DestroyMenu( sys_menu );
      if (surface)
      {
          register_window_surface( surface, NULL );
          window_surface_release( surface );
      }
  
      USER_Driver->pDestroyWindow( hwnd );
  
      free_window_handle( hwnd );
      return 0;
  }
  
  
  /***********************************************************************
   *           next_thread_window
   */
  static WND *next_thread_window( HWND *hwnd )
  {
      struct user_object *ptr;
      WND *win;
      WORD index = *hwnd ? USER_HANDLE_TO_INDEX( *hwnd ) + 1 : 0;
  
      USER_Lock();
      while (index < NB_USER_HANDLES)
      {
          if (!(ptr = user_handles[index++])) continue;
          if (ptr->type != USER_WINDOW) continue;
          win = (WND *)ptr;
          if (win->tid != GetCurrentThreadId()) continue;
          *hwnd = ptr->handle;
          return win;
      }
      USER_Unlock();
      return NULL;
  }
  
  
  /***********************************************************************
   *		destroy_thread_windows
   *
   * Destroy all window owned by the current thread.
   */
  void destroy_thread_windows(void)
  {
      WND *wndPtr;
      HWND hwnd = 0, *list;
      HMENU menu, sys_menu;
      struct window_surface *surface;
      int i;
  
      while ((wndPtr = next_thread_window( &hwnd )))
      {
          /* destroy the client-side storage */
  
          list = WIN_ListChildren( hwnd );
          menu = ((wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) != WS_CHILD) ? (HMENU)wndPtr->wIDmenu : 0;
          sys_menu = wndPtr->hSysMenu;
          free_dce( wndPtr->dce, hwnd );
          surface = wndPtr->surface;
          InterlockedCompareExchangePointer( &user_handles[USER_HANDLE_TO_INDEX(hwnd)], NULL, wndPtr );
          WIN_ReleasePtr( wndPtr );
          HeapFree( GetProcessHeap(), 0, wndPtr );
          if (menu) DestroyMenu( menu );
          if (sys_menu) DestroyMenu( sys_menu );
          if (surface)
          {
              register_window_surface( surface, NULL );
              window_surface_release( surface );
          }
  
          /* free child windows */
  
          if (!list) continue;
          for (i = 0; list[i]; i++)
              if (!WIN_IsCurrentThread( list[i] ))
                  SendNotifyMessageW( list[i], WM_WINE_DESTROYWINDOW, 0, 0 );
          HeapFree( GetProcessHeap(), 0, list );
      }
  }
  
  
  /***********************************************************************
   *           WIN_FixCoordinates
   *
   * Fix the coordinates - Helper for WIN_CreateWindowEx.
   * returns default show mode in sw.
   */
  static void WIN_FixCoordinates( CREATESTRUCTW *cs, INT *sw)
  {
  #define IS_DEFAULT(x)  ((x) == CW_USEDEFAULT || (x) == (SHORT)0x8000)
      POINT pos[2];
  
      if (cs->dwExStyle & WS_EX_MDICHILD)
      {
          UINT id = 0;
  
          MDI_CalcDefaultChildPos(cs->hwndParent, -1, pos, 0, &id);
          if (!(cs->style & WS_POPUP)) cs->hMenu = ULongToHandle(id);
  
          TRACE("MDI child id %04x\n", id);
      }
  
      if (cs->style & (WS_CHILD | WS_POPUP))
      {
          if (cs->dwExStyle & WS_EX_MDICHILD)
          {
              if (IS_DEFAULT(cs->x))
              {
                  cs->x = pos[0].x;
                  cs->y = pos[0].y;
              }
              if (IS_DEFAULT(cs->cx) || !cs->cx) cs->cx = pos[1].x;
              if (IS_DEFAULT(cs->cy) || !cs->cy) cs->cy = pos[1].y;
          }
          else
          {
              if (IS_DEFAULT(cs->x)) cs->x = cs->y = 0;
              if (IS_DEFAULT(cs->cx)) cs->cx = cs->cy = 0;
          }
      }
      else  /* overlapped window */
      {
          HMONITOR monitor;
          MONITORINFO mon_info;
          STARTUPINFOW info;
  
          if (!IS_DEFAULT(cs->x) && !IS_DEFAULT(cs->cx) && !IS_DEFAULT(cs->cy)) return;
  
          monitor = MonitorFromWindow( cs->hwndParent, MONITOR_DEFAULTTOPRIMARY );
          mon_info.cbSize = sizeof(mon_info);
          GetMonitorInfoW( monitor, &mon_info );
          GetStartupInfoW( &info );
  
          if (IS_DEFAULT(cs->x))
          {
              if (!IS_DEFAULT(cs->y)) *sw = cs->y;
              cs->x = (info.dwFlags & STARTF_USEPOSITION) ? info.dwX : mon_info.rcWork.left;
              cs->y = (info.dwFlags & STARTF_USEPOSITION) ? info.dwY : mon_info.rcWork.top;
          }
  
          if (IS_DEFAULT(cs->cx))
          {
              if (info.dwFlags & STARTF_USESIZE)
              {
                  cs->cx = info.dwXSize;
                  cs->cy = info.dwYSize;
              }
              else
              {
                  cs->cx = (mon_info.rcWork.right - mon_info.rcWork.left) * 3 / 4 - cs->x;
                  cs->cy = (mon_info.rcWork.bottom - mon_info.rcWork.top) * 3 / 4 - cs->y;
              }
          }
          /* neither x nor cx are default. Check the y values .
           * In the trace we see Outlook and Outlook Express using
           * cy set to CW_USEDEFAULT when opening the address book.
           */
          else if (IS_DEFAULT(cs->cy))
          {
              FIXME("Strange use of CW_USEDEFAULT in nHeight\n");
              cs->cy = (mon_info.rcWork.bottom - mon_info.rcWork.top) * 3 / 4 - cs->y;
          }
      }
  #undef IS_DEFAULT
  }
  
  /***********************************************************************
   *           dump_window_styles
   */
  static void dump_window_styles( DWORD style, DWORD exstyle )
  {
      TRACE( "style:" );
      if(style & WS_POPUP) TRACE(" WS_POPUP");
      if(style & WS_CHILD) TRACE(" WS_CHILD");
      if(style & WS_MINIMIZE) TRACE(" WS_MINIMIZE");
      if(style & WS_VISIBLE) TRACE(" WS_VISIBLE");
      if(style & WS_DISABLED) TRACE(" WS_DISABLED");
      if(style & WS_CLIPSIBLINGS) TRACE(" WS_CLIPSIBLINGS");
      if(style & WS_CLIPCHILDREN) TRACE(" WS_CLIPCHILDREN");
      if(style & WS_MAXIMIZE) TRACE(" WS_MAXIMIZE");
      if((style & WS_CAPTION) == WS_CAPTION) TRACE(" WS_CAPTION");
      else
      {
          if(style & WS_BORDER) TRACE(" WS_BORDER");
          if(style & WS_DLGFRAME) TRACE(" WS_DLGFRAME");
      }
      if(style & WS_VSCROLL) TRACE(" WS_VSCROLL");
      if(style & WS_HSCROLL) TRACE(" WS_HSCROLL");
      if(style & WS_SYSMENU) TRACE(" WS_SYSMENU");
      if(style & WS_THICKFRAME) TRACE(" WS_THICKFRAME");
      if (style & WS_CHILD)
      {
          if(style & WS_GROUP) TRACE(" WS_GROUP");
          if(style & WS_TABSTOP) TRACE(" WS_TABSTOP");
      }
      else
      {
          if(style & WS_MINIMIZEBOX) TRACE(" WS_MINIMIZEBOX");
          if(style & WS_MAXIMIZEBOX) TRACE(" WS_MAXIMIZEBOX");
      }
  
      /* FIXME: Add dumping of BS_/ES_/SBS_/LBS_/CBS_/DS_/etc. styles */
  #define DUMPED_STYLES \
      ((DWORD)(WS_POPUP | \
       WS_CHILD | \
       WS_MINIMIZE | \
       WS_VISIBLE | \
       WS_DISABLED | \
       WS_CLIPSIBLINGS | \
       WS_CLIPCHILDREN | \
       WS_MAXIMIZE | \
       WS_BORDER | \
       WS_DLGFRAME | \
       WS_VSCROLL | \
       WS_HSCROLL | \
       WS_SYSMENU | \
       WS_THICKFRAME | \
       WS_GROUP | \
       WS_TABSTOP | \
       WS_MINIMIZEBOX | \
       WS_MAXIMIZEBOX))
  
      if(style & ~DUMPED_STYLES) TRACE(" %08x", style & ~DUMPED_STYLES);
      TRACE("\n");
  #undef DUMPED_STYLES
  
      TRACE( "exstyle:" );
      if(exstyle & WS_EX_DLGMODALFRAME) TRACE(" WS_EX_DLGMODALFRAME");
      if(exstyle & WS_EX_DRAGDETECT) TRACE(" WS_EX_DRAGDETECT");
      if(exstyle & WS_EX_NOPARENTNOTIFY) TRACE(" WS_EX_NOPARENTNOTIFY");
      if(exstyle & WS_EX_TOPMOST) TRACE(" WS_EX_TOPMOST");
      if(exstyle & WS_EX_ACCEPTFILES) TRACE(" WS_EX_ACCEPTFILES");
      if(exstyle & WS_EX_TRANSPARENT) TRACE(" WS_EX_TRANSPARENT");
      if(exstyle & WS_EX_MDICHILD) TRACE(" WS_EX_MDICHILD");
      if(exstyle & WS_EX_TOOLWINDOW) TRACE(" WS_EX_TOOLWINDOW");
      if(exstyle & WS_EX_WINDOWEDGE) TRACE(" WS_EX_WINDOWEDGE");
      if(exstyle & WS_EX_CLIENTEDGE) TRACE(" WS_EX_CLIENTEDGE");
      if(exstyle & WS_EX_CONTEXTHELP) TRACE(" WS_EX_CONTEXTHELP");
      if(exstyle & WS_EX_RIGHT) TRACE(" WS_EX_RIGHT");
      if(exstyle & WS_EX_RTLREADING) TRACE(" WS_EX_RTLREADING");
      if(exstyle & WS_EX_LEFTSCROLLBAR) TRACE(" WS_EX_LEFTSCROLLBAR");
      if(exstyle & WS_EX_CONTROLPARENT) TRACE(" WS_EX_CONTROLPARENT");
      if(exstyle & WS_EX_STATICEDGE) TRACE(" WS_EX_STATICEDGE");
      if(exstyle & WS_EX_APPWINDOW) TRACE(" WS_EX_APPWINDOW");
      if(exstyle & WS_EX_LAYERED) TRACE(" WS_EX_LAYERED");
      if(exstyle & WS_EX_NOINHERITLAYOUT) TRACE(" WS_EX_NOINHERITLAYOUT");
      if(exstyle & WS_EX_LAYOUTRTL) TRACE(" WS_EX_LAYOUTRTL");
      if(exstyle & WS_EX_COMPOSITED) TRACE(" WS_EX_COMPOSITED");
      if(exstyle & WS_EX_NOACTIVATE) TRACE(" WS_EX_NOACTIVATE");
  
  #define DUMPED_EX_STYLES \
      ((DWORD)(WS_EX_DLGMODALFRAME | \
       WS_EX_DRAGDETECT | \
       WS_EX_NOPARENTNOTIFY | \
       WS_EX_TOPMOST | \
       WS_EX_ACCEPTFILES | \
       WS_EX_TRANSPARENT | \
       WS_EX_MDICHILD | \
       WS_EX_TOOLWINDOW | \
       WS_EX_WINDOWEDGE | \
       WS_EX_CLIENTEDGE | \
       WS_EX_CONTEXTHELP | \
       WS_EX_RIGHT | \
       WS_EX_RTLREADING | \
       WS_EX_LEFTSCROLLBAR | \
       WS_EX_CONTROLPARENT | \
       WS_EX_STATICEDGE | \
       WS_EX_APPWINDOW | \
       WS_EX_LAYERED | \
       WS_EX_NOINHERITLAYOUT | \
       WS_EX_LAYOUTRTL | \
       WS_EX_COMPOSITED |\
       WS_EX_NOACTIVATE))
  
      if(exstyle & ~DUMPED_EX_STYLES) TRACE(" %08x", exstyle & ~DUMPED_EX_STYLES);
      TRACE("\n");
  #undef DUMPED_EX_STYLES
  }
  
  /***********************************************************************
   *           map_dpi_create_struct
   */
  static void map_dpi_create_struct( CREATESTRUCTW *cs, UINT dpi_from, UINT dpi_to )
  {
      if (!dpi_from && !dpi_to) return;
      if (!dpi_from || !dpi_to)
      {
          POINT pt = { cs->x, cs->y };
          UINT mon_dpi = get_monitor_dpi( MonitorFromPoint( pt, MONITOR_DEFAULTTONEAREST ));
          if (!dpi_from) dpi_from = mon_dpi;
          else dpi_to = mon_dpi;
      }
      if (dpi_from == dpi_to) return;
      cs->x = MulDiv( cs->x, dpi_to, dpi_from );
      cs->y = MulDiv( cs->y, dpi_to, dpi_from );
      cs->cx = MulDiv( cs->cx, dpi_to, dpi_from );
      cs->cy = MulDiv( cs->cy, dpi_to, dpi_from );
  }
  
  /***********************************************************************
   *           WIN_CreateWindowEx
   *
   * Implementation of CreateWindowEx().
   */
  HWND WIN_CreateWindowEx( CREATESTRUCTW *cs, LPCWSTR className, HINSTANCE module, BOOL unicode )
  {
      INT cx, cy, style, sw = SW_SHOW;
      LRESULT result;
      RECT rect;
      WND *wndPtr;
      HWND hwnd, parent, owner, top_child = 0;
      const WCHAR *p = className;
      UINT win_dpi, thread_dpi = get_thread_dpi();
      DPI_AWARENESS_CONTEXT context;
      MDICREATESTRUCTW mdi_cs;
      CBT_CREATEWNDW cbtc;
      CREATESTRUCTW cbcs;
  
      className = CLASS_GetVersionedName(className, NULL, NULL, TRUE);
  
      TRACE("%s %s%s%s ex=%08x style=%08x %d,%d %dx%d parent=%p menu=%p inst=%p params=%p\n",
            unicode ? debugstr_w(cs->lpszName) : debugstr_a((LPCSTR)cs->lpszName),
            debugstr_w(p), p != className ? "->" : "", p != className ? debugstr_w(className) : "",
            cs->dwExStyle, cs->style, cs->x, cs->y, cs->cx, cs->cy,
            cs->hwndParent, cs->hMenu, cs->hInstance, cs->lpCreateParams );
      if(TRACE_ON(win)) dump_window_styles( cs->style, cs->dwExStyle );
  
      /* Fix the styles for MDI children */
      if (cs->dwExStyle & WS_EX_MDICHILD)
      {
          if (!(win_get_flags( cs->hwndParent ) & WIN_ISMDICLIENT))
          {
              WARN("WS_EX_MDICHILD, but parent %p is not MDIClient\n", cs->hwndParent);
              return 0;
          }
  
          /* cs->lpCreateParams of WM_[NC]CREATE is different for MDI children.
           * MDICREATESTRUCT members have the originally passed values.
           *
           * Note: we rely on the fact that MDICREATESTRUCTA and MDICREATESTRUCTW
           * have the same layout.
           */
          mdi_cs.szClass = cs->lpszClass;
          mdi_cs.szTitle = cs->lpszName;
          mdi_cs.hOwner = cs->hInstance;
          mdi_cs.x = cs->x;
          mdi_cs.y = cs->y;
          mdi_cs.cx = cs->cx;
          mdi_cs.cy = cs->cy;
          mdi_cs.style = cs->style;
          mdi_cs.lParam = (LPARAM)cs->lpCreateParams;
  
          cs->lpCreateParams = &mdi_cs;
  
          if (GetWindowLongW(cs->hwndParent, GWL_STYLE) & MDIS_ALLCHILDSTYLES)
          {
              if (cs->style & WS_POPUP)
              {
                  TRACE("WS_POPUP with MDIS_ALLCHILDSTYLES is not allowed\n");
                  return 0;
              }
              cs->style |= WS_CHILD | WS_CLIPSIBLINGS;
          }
          else
          {
              cs->style &= ~WS_POPUP;
              cs->style |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CAPTION |
                  WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
          }
  
          top_child = GetWindow(cs->hwndParent, GW_CHILD);
  
          if (top_child)
          {
              /* Restore current maximized child */
              if((cs->style & WS_VISIBLE) && IsZoomed(top_child))
              {
                  TRACE("Restoring current maximized child %p\n", top_child);
                  if (cs->style & WS_MAXIMIZE)
                  {
                      /* if the new window is maximized don't bother repainting */
                      SendMessageW( top_child, WM_SETREDRAW, FALSE, 0 );
                      ShowWindow( top_child, SW_SHOWNORMAL );
                      SendMessageW( top_child, WM_SETREDRAW, TRUE, 0 );
                  }
                  else ShowWindow( top_child, SW_SHOWNORMAL );
              }
          }
      }
  
      /* Find the parent window */
  
      parent = cs->hwndParent;
      owner = 0;
  
      if (cs->hwndParent == HWND_MESSAGE)
      {
          cs->hwndParent = parent = get_hwnd_message_parent();
      }
      else if (cs->hwndParent)
      {
          if ((cs->style & (WS_CHILD|WS_POPUP)) != WS_CHILD)
          {
              parent = GetDesktopWindow();
              owner = cs->hwndParent;
          }
          else
          {
              DWORD parent_style = GetWindowLongW( parent, GWL_EXSTYLE );
              if ((parent_style & WS_EX_LAYOUTRTL) && !(parent_style & WS_EX_NOINHERITLAYOUT))
                  cs->dwExStyle |= WS_EX_LAYOUTRTL;
          }
      }
      else
      {
          static const WCHAR messageW[] = {'M','e','s','s','a','g','e',0};
  
          if ((cs->style & (WS_CHILD|WS_POPUP)) == WS_CHILD)
          {
              WARN("No parent for child window\n" );
              SetLastError(ERROR_TLW_WITH_WSCHILD);
              return 0;  /* WS_CHILD needs a parent, but WS_POPUP doesn't */
          }
  
          /* are we creating the desktop or HWND_MESSAGE parent itself? */
          if (className != (LPCWSTR)DESKTOP_CLASS_ATOM &&
              (IS_INTRESOURCE(className) || strcmpiW( className, messageW )))
          {
              DWORD layout;
              GetProcessDefaultLayout( &layout );
              if (layout & LAYOUT_RTL) cs->dwExStyle |= WS_EX_LAYOUTRTL;
              parent = GetDesktopWindow();
          }
      }
  
      WIN_FixCoordinates(cs, &sw); /* fix default coordinates */
  
      if ((cs->dwExStyle & WS_EX_DLGMODALFRAME) ||
          ((!(cs->dwExStyle & WS_EX_STATICEDGE)) &&
            (cs->style & (WS_DLGFRAME | WS_THICKFRAME))))
          cs->dwExStyle |= WS_EX_WINDOWEDGE;
      else
          cs->dwExStyle &= ~WS_EX_WINDOWEDGE;
  
      /* Create the window structure */
  
      if (!(wndPtr = create_window_handle( parent, owner, className, module, unicode )))
      {
          WNDCLASSW wc;
          /* if it's a comctl32 class, GetClassInfo will load it, then we can retry */
          if (GetLastError() != ERROR_INVALID_HANDLE ||
              !GetClassInfoW( 0, className, &wc ) ||
              !(wndPtr = create_window_handle( parent, owner, className, module, unicode )))
              return 0;
      }
      hwnd = wndPtr->obj.handle;
  
      /* Fill the window structure */
  
      wndPtr->tid            = GetCurrentThreadId();
      wndPtr->hInstance      = cs->hInstance;
      wndPtr->text           = NULL;
      wndPtr->dwStyle        = cs->style & ~WS_VISIBLE;
      wndPtr->dwExStyle      = cs->dwExStyle;
      wndPtr->wIDmenu        = 0;
      wndPtr->helpContext    = 0;
      wndPtr->pScroll        = NULL;
      wndPtr->userdata       = 0;
      wndPtr->hIcon          = 0;
      wndPtr->hIconSmall     = 0;
      wndPtr->hIconSmall2    = 0;
      wndPtr->hSysMenu       = 0;
  
      wndPtr->min_pos.x = wndPtr->min_pos.y = -1;
      wndPtr->max_pos.x = wndPtr->max_pos.y = -1;
      SetRect( &wndPtr->normal_rect, cs->x, cs->y, cs->x + cs->cx, cs->y + cs->cy );
  
      if (wndPtr->dwStyle & WS_SYSMENU) SetSystemMenu( hwnd, 0 );
  
      /*
       * Correct the window styles.
       *
       * It affects only the style loaded into the WIN structure.
       */
  
      if ((wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) != WS_CHILD)
      {
          wndPtr->dwStyle |= WS_CLIPSIBLINGS;
          if (!(wndPtr->dwStyle & WS_POPUP))
              wndPtr->dwStyle |= WS_CAPTION;
      }
  
      /* WS_EX_WINDOWEDGE depends on some other styles */
      if (wndPtr->dwExStyle & WS_EX_DLGMODALFRAME)
          wndPtr->dwExStyle |= WS_EX_WINDOWEDGE;
      else if (wndPtr->dwStyle & (WS_DLGFRAME | WS_THICKFRAME))
      {
          if (!((wndPtr->dwExStyle & WS_EX_STATICEDGE) &&
              (wndPtr->dwStyle & (WS_CHILD | WS_POPUP))))
              wndPtr->dwExStyle |= WS_EX_WINDOWEDGE;
      }
      else
          wndPtr->dwExStyle &= ~WS_EX_WINDOWEDGE;
  
      if (!(wndPtr->dwStyle & (WS_CHILD | WS_POPUP)))
          wndPtr->flags |= WIN_NEED_SIZE;
  
      SERVER_START_REQ( set_window_info )
      {
          req->handle    = wine_server_user_handle( hwnd );
          req->flags     = SET_WIN_STYLE | SET_WIN_EXSTYLE | SET_WIN_INSTANCE | SET_WIN_UNICODE;
          req->style     = wndPtr->dwStyle;
          req->ex_style  = wndPtr->dwExStyle;
          req->instance  = wine_server_client_ptr( wndPtr->hInstance );
          req->is_unicode = (wndPtr->flags & WIN_ISUNICODE) != 0;
          req->extra_offset = -1;
          wine_server_call( req );
      }
      SERVER_END_REQ;
  
      /* Set the window menu */
  
      if ((wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) != WS_CHILD)
      {
          if (cs->hMenu)
          {
              if (!MENU_SetMenu(hwnd, cs->hMenu))
              {
                  WIN_ReleasePtr( wndPtr );
                  free_window_handle( hwnd );
                  return 0;
              }
          }
          else
          {
              LPCWSTR menuName = (LPCWSTR)GetClassLongPtrW( hwnd, GCLP_MENUNAME );
              if (menuName)
              {
                  cs->hMenu = LoadMenuW( cs->hInstance, menuName );
                  if (cs->hMenu) MENU_SetMenu( hwnd, cs->hMenu );
              }
          }
      }
      else SetWindowLongPtrW( hwnd, GWLP_ID, (ULONG_PTR)cs->hMenu );
  
      style = wndPtr->dwStyle;
      win_dpi = wndPtr->dpi;
      WIN_ReleasePtr( wndPtr );
  
      if (parent) map_dpi_create_struct( cs, thread_dpi, win_dpi );
  
      context = SetThreadDpiAwarenessContext( GetWindowDpiAwarenessContext( hwnd ));
  
      /* call the WH_CBT hook */
  
      /* the window style passed to the hook must be the real window style,
       * rather than just the window style that the caller to CreateWindowEx
       * passed in, so we have to copy the original CREATESTRUCT and get the
       * the real style. */
      cbcs = *cs;
      cbcs.style = style;
      cbtc.lpcs = &cbcs;
      cbtc.hwndInsertAfter = HWND_TOP;
      if (HOOK_CallHooks( WH_CBT, HCBT_CREATEWND, (WPARAM)hwnd, (LPARAM)&cbtc, unicode )) goto failed;
  
      /* send the WM_GETMINMAXINFO message and fix the size if needed */
  
      cx = cs->cx;
      cy = cs->cy;
      if ((cs->style & WS_THICKFRAME) || !(cs->style & (WS_POPUP | WS_CHILD)))
      {
          MINMAXINFO info = WINPOS_GetMinMaxInfo( hwnd );
          cx = max( min( cx, info.ptMaxTrackSize.x ), info.ptMinTrackSize.x );
          cy = max( min( cy, info.ptMaxTrackSize.y ), info.ptMinTrackSize.y );
      }
  
      if (cx < 0) cx = 0;
      if (cy < 0) cy = 0;
      SetRect( &rect, cs->x, cs->y, cs->x + cx, cs->y + cy );
      /* check for wraparound */
      if (cs->x > 0x7fffffff - cx) rect.right = 0x7fffffff;
      if (cs->y > 0x7fffffff - cy) rect.bottom = 0x7fffffff;
      if (!set_window_pos( hwnd, 0, SWP_NOZORDER | SWP_NOACTIVATE, &rect, &rect, NULL )) goto failed;
  
      /* send WM_NCCREATE */
  
      TRACE( "hwnd %p cs %d,%d %dx%d %s\n", hwnd, cs->x, cs->y, cs->cx, cs->cy, wine_dbgstr_rect(&rect) );
      if (unicode)
          result = SendMessageW( hwnd, WM_NCCREATE, 0, (LPARAM)cs );
      else
          result = SendMessageA( hwnd, WM_NCCREATE, 0, (LPARAM)cs );
      if (!result)
      {
          WARN( "%p: aborted by WM_NCCREATE\n", hwnd );
          goto failed;
      }
  
      /* create default IME window */
  
      if (imm_register_window && !is_desktop_window( hwnd ) &&
          parent != get_hwnd_message_parent() && imm_register_window( hwnd ))
      {
          TRACE("register IME window for %p\n", hwnd);
          win_set_flags( hwnd, WIN_HAS_IME_WIN, 0 );
      }
  
      /* send WM_NCCALCSIZE */
  
      if (WIN_GetRectangles( hwnd, COORDS_PARENT, &rect, NULL ))
      {
          /* yes, even if the CBT hook was called with HWND_TOP */
          HWND insert_after = (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD) ? HWND_BOTTOM : HWND_TOP;
          RECT client_rect = rect;
  
          /* the rectangle is in screen coords for WM_NCCALCSIZE when wparam is FALSE */
          MapWindowPoints( parent, 0, (POINT *)&client_rect, 2 );
          SendMessageW( hwnd, WM_NCCALCSIZE, FALSE, (LPARAM)&client_rect );
          MapWindowPoints( 0, parent, (POINT *)&client_rect, 2 );
          set_window_pos( hwnd, insert_after, SWP_NOACTIVATE, &rect, &client_rect, NULL );
      }
      else goto failed;
  
      /* send WM_CREATE */
  
      if (unicode)
          result = SendMessageW( hwnd, WM_CREATE, 0, (LPARAM)cs );
      else
          result = SendMessageA( hwnd, WM_CREATE, 0, (LPARAM)cs );
      if (result == -1) goto failed;
  
      /* call the driver */
  
      if (!USER_Driver->pCreateWindow( hwnd )) goto failed;
  
      NotifyWinEvent(EVENT_OBJECT_CREATE, hwnd, OBJID_WINDOW, 0);
  
      /* send the size messages */
  
      if (!(win_get_flags( hwnd ) & WIN_NEED_SIZE))
      {
          WIN_GetRectangles( hwnd, COORDS_PARENT, NULL, &rect );
          SendMessageW( hwnd, WM_SIZE, SIZE_RESTORED,
                        MAKELONG(rect.right-rect.left, rect.bottom-rect.top));
          SendMessageW( hwnd, WM_MOVE, 0, MAKELONG( rect.left, rect.top ) );
      }
  
      /* Show the window, maximizing or minimizing if needed */
  
      style = WIN_SetStyle( hwnd, 0, WS_MAXIMIZE | WS_MINIMIZE );
      if (style & (WS_MINIMIZE | WS_MAXIMIZE))
      {
          RECT newPos;
          UINT swFlag = (style & WS_MINIMIZE) ? SW_MINIMIZE : SW_MAXIMIZE;
  
          swFlag = WINPOS_MinMaximize( hwnd, swFlag, &newPos );
          swFlag |= SWP_FRAMECHANGED; /* Frame always gets changed */
          if (!(style & WS_VISIBLE) || (style & WS_CHILD) || GetActiveWindow()) swFlag |= SWP_NOACTIVATE;
          SetWindowPos( hwnd, 0, newPos.left, newPos.top, newPos.right - newPos.left,
                        newPos.bottom - newPos.top, swFlag );
      }
  
      /* Notify the parent window only */
  
      send_parent_notify( hwnd, WM_CREATE );
      if (!IsWindow( hwnd ))
      {
          SetThreadDpiAwarenessContext( context );
          return 0;
      }
  
      if (parent == GetDesktopWindow())
          PostMessageW( parent, WM_PARENTNOTIFY, WM_CREATE, (LPARAM)hwnd );
  
      if (cs->style & WS_VISIBLE)
      {
          if (cs->style & WS_MAXIMIZE)
              sw = SW_SHOW;
          else if (cs->style & WS_MINIMIZE)
              sw = SW_SHOWMINIMIZED;
  
          ShowWindow( hwnd, sw );
          if (cs->dwExStyle & WS_EX_MDICHILD)
          {
              SendMessageW(cs->hwndParent, WM_MDIREFRESHMENU, 0, 0);
              /* ShowWindow won't activate child windows */
              SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOSIZE );
          }
      }
  
      /* Call WH_SHELL hook */
  
      if (!(GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD) && !GetWindow( hwnd, GW_OWNER ))
          HOOK_CallHooks( WH_SHELL, HSHELL_WINDOWCREATED, (WPARAM)hwnd, 0, TRUE );
  
      TRACE("created window %p\n", hwnd);
      SetThreadDpiAwarenessContext( context );
      return hwnd;
  
  failed:
      WIN_DestroyWindow( hwnd );
      SetThreadDpiAwarenessContext( context );
      return 0;
  }
  
  
  /***********************************************************************
   *		CreateWindowExA (USER32.@)
   */
  HWND WINAPI DECLSPEC_HOTPATCH CreateWindowExA( DWORD exStyle, LPCSTR className,
                                   LPCSTR windowName, DWORD style, INT x,
                                   INT y, INT width, INT height,
                                   HWND parent, HMENU menu,
                                   HINSTANCE instance, LPVOID data )
  {
      CREATESTRUCTA cs;
  
      cs.lpCreateParams = data;
      cs.hInstance      = instance;
      cs.hMenu          = menu;
      cs.hwndParent     = parent;
      cs.x              = x;
      cs.y              = y;
      cs.cx             = width;
      cs.cy             = height;
      cs.style          = style;
      cs.lpszName       = windowName;
      cs.lpszClass      = className;
      cs.dwExStyle      = exStyle;
  
      if (!IS_INTRESOURCE(className))
      {
          WCHAR bufferW[256];
          if (!MultiByteToWideChar( CP_ACP, 0, className, -1, bufferW, ARRAY_SIZE( bufferW )))
              return 0;
          return wow_handlers.create_window( (CREATESTRUCTW *)&cs, bufferW, instance, FALSE );
      }
      /* Note: we rely on the fact that CREATESTRUCTA and */
      /* CREATESTRUCTW have the same layout. */
      return wow_handlers.create_window( (CREATESTRUCTW *)&cs, (LPCWSTR)className, instance, FALSE );
  }
  
  
  /***********************************************************************
   *		CreateWindowExW (USER32.@)
   */
  HWND WINAPI DECLSPEC_HOTPATCH CreateWindowExW( DWORD exStyle, LPCWSTR className,
                                   LPCWSTR windowName, DWORD style, INT x,
                                   INT y, INT width, INT height,
                                   HWND parent, HMENU menu,
                                   HINSTANCE instance, LPVOID data )
  {
      CREATESTRUCTW cs;
  
      cs.lpCreateParams = data;
      cs.hInstance      = instance;
      cs.hMenu          = menu;
      cs.hwndParent     = parent;
      cs.x              = x;
      cs.y              = y;
      cs.cx             = width;
      cs.cy             = height;
      cs.style          = style;
      cs.lpszName       = windowName;
      cs.lpszClass      = className;
      cs.dwExStyle      = exStyle;
  
      return wow_handlers.create_window( &cs, className, instance, TRUE );
  }
  
  
  /***********************************************************************
   *           WIN_SendDestroyMsg
   */
  static void WIN_SendDestroyMsg( HWND hwnd )
  {
      GUITHREADINFO info;
  
      info.cbSize = sizeof(info);
      if (GetGUIThreadInfo( GetCurrentThreadId(), &info ))
      {
          if (hwnd == info.hwndCaret) DestroyCaret();
          if (hwnd == info.hwndActive) WINPOS_ActivateOtherWindow( hwnd );
      }
  
      if (hwnd == GetClipboardOwner()) CLIPBOARD_ReleaseOwner( hwnd );
  
      /*
       * Send the WM_DESTROY to the window.
       */
      SendMessageW( hwnd, WM_DESTROY, 0, 0);
  
      /*
       * This WM_DESTROY message can trigger re-entrant calls to DestroyWindow
       * make sure that the window still exists when we come back.
       */
      if (IsWindow(hwnd))
      {
          HWND* pWndArray;
          int i;
  
          if (!(pWndArray = WIN_ListChildren( hwnd ))) return;
  
          for (i = 0; pWndArray[i]; i++)
          {
              if (IsWindow( pWndArray[i] )) WIN_SendDestroyMsg( pWndArray[i] );
          }
          HeapFree( GetProcessHeap(), 0, pWndArray );
      }
      else
        WARN("\tdestroyed itself while in WM_DESTROY!\n");
  }
  
  
  /***********************************************************************
   *		DestroyWindow (USER32.@)
   */
  BOOL WINAPI DestroyWindow( HWND hwnd )
  {
      BOOL is_child;
  
      if (!(hwnd = WIN_IsCurrentThread( hwnd )) || is_desktop_window( hwnd ))
      {
          SetLastError( ERROR_ACCESS_DENIED );
          return FALSE;
      }
  
      TRACE("(%p)\n", hwnd);
  
        /* Call hooks */
  
      if (HOOK_CallHooks( WH_CBT, HCBT_DESTROYWND, (WPARAM)hwnd, 0, TRUE )) return FALSE;
  
      if (MENU_IsMenuActive() == hwnd)
          EndMenu();
  
      is_child = (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD) != 0;
  
      if (is_child)
      {
          if (!USER_IsExitingThread( GetCurrentThreadId() ))
              send_parent_notify( hwnd, WM_DESTROY );
      }
      else if (!GetWindow( hwnd, GW_OWNER ))
      {
          HOOK_CallHooks( WH_SHELL, HSHELL_WINDOWDESTROYED, (WPARAM)hwnd, 0L, TRUE );
          /* FIXME: clean up palette - see "Internals" p.352 */
      }
  
      if (!IsWindow(hwnd)) return TRUE;
  
        /* Hide the window */
      if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE)
      {
          /* Only child windows receive WM_SHOWWINDOW in DestroyWindow() */
          if (is_child)
              ShowWindow( hwnd, SW_HIDE );
          else
              SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE |
                            SWP_NOZORDER | SWP_NOACTIVATE | SWP_HIDEWINDOW );
      }
  
      if (!IsWindow(hwnd)) return TRUE;
  
        /* Recursively destroy owned windows */
  
      if (!is_child)
      {
          for (;;)
          {
              int i;
              BOOL got_one = FALSE;
              HWND *list = WIN_ListChildren( GetDesktopWindow() );
              if (list)
              {
                  for (i = 0; list[i]; i++)
                  {
                      if (GetWindow( list[i], GW_OWNER ) != hwnd) continue;
                      if (WIN_IsCurrentThread( list[i] ))
                      {
                          DestroyWindow( list[i] );
                          got_one = TRUE;
                          continue;
                      }
                      WIN_SetOwner( list[i], 0 );
                  }
                  HeapFree( GetProcessHeap(), 0, list );
              }
              if (!got_one) break;
          }
      }
  
        /* Send destroy messages */
  
      WIN_SendDestroyMsg( hwnd );
      if (!IsWindow( hwnd )) return TRUE;
  
        /* Destroy the window storage */
  
      WIN_DestroyWindow( hwnd );
      return TRUE;
  }
  
  
  /***********************************************************************
   *		CloseWindow (USER32.@)
   */
  BOOL WINAPI CloseWindow( HWND hwnd )
  {
      if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD) return FALSE;
      ShowWindow( hwnd, SW_MINIMIZE );
      return TRUE;
  }
  
  
  /***********************************************************************
   *		OpenIcon (USER32.@)
   */
  BOOL WINAPI OpenIcon( HWND hwnd )
  {
      if (!IsIconic( hwnd )) return FALSE;
      ShowWindow( hwnd, SW_SHOWNORMAL );
      return TRUE;
  }
  
  
  /***********************************************************************
   *		FindWindowExW (USER32.@)
   */
  HWND WINAPI FindWindowExW( HWND parent, HWND child, LPCWSTR className, LPCWSTR title )
  {
      HWND *list;
      HWND retvalue = 0;
      int i = 0, len = 0;
      WCHAR *buffer = NULL;
  
      if (!parent && child) parent = GetDesktopWindow();
      else if (parent == HWND_MESSAGE) parent = get_hwnd_message_parent();
  
      if (title)
      {
          len = strlenW(title) + 1;  /* one extra char to check for chars beyond the end */
          if (!(buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) ))) return 0;
      }
  
      if (!(list = list_window_children( 0, parent, className, 0 ))) goto done;
  
      if (child)
      {
          child = WIN_GetFullHandle( child );
          while (list[i] && list[i] != child) i++;
          if (!list[i]) goto done;
          i++;  /* start from next window */
      }
  
      if (title)
      {
          while (list[i])
          {
              if (InternalGetWindowText( list[i], buffer, len + 1 ))
              {
                  if (!strcmpiW( buffer, title )) break;
              }
              else
              {
                  if (!title[0]) break;
              }
              i++;
          }
      }
      retvalue = list[i];
  
   done:
      HeapFree( GetProcessHeap(), 0, list );
      HeapFree( GetProcessHeap(), 0, buffer );
      return retvalue;
  }
  
  
  
  /***********************************************************************
   *		FindWindowA (USER32.@)
   */
  HWND WINAPI FindWindowA( LPCSTR className, LPCSTR title )
  {
      HWND ret = FindWindowExA( 0, 0, className, title );
      if (!ret) SetLastError (ERROR_CANNOT_FIND_WND_CLASS);
      return ret;
  }
  
  
  /***********************************************************************
   *		FindWindowExA (USER32.@)
   */
  HWND WINAPI FindWindowExA( HWND parent, HWND child, LPCSTR className, LPCSTR title )
  {
      LPWSTR titleW = NULL;
      HWND hwnd = 0;
  
      if (title)
      {
          DWORD len = MultiByteToWideChar( CP_ACP, 0, title, -1, NULL, 0 );
          if (!(titleW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return 0;
          MultiByteToWideChar( CP_ACP, 0, title, -1, titleW, len );
      }
  
      if (!IS_INTRESOURCE(className))
      {
          WCHAR classW[256];
          if (MultiByteToWideChar( CP_ACP, 0, className, -1, classW, ARRAY_SIZE( classW )))
              hwnd = FindWindowExW( parent, child, classW, titleW );
      }
      else
      {
          hwnd = FindWindowExW( parent, child, (LPCWSTR)className, titleW );
      }
  
      HeapFree( GetProcessHeap(), 0, titleW );
      return hwnd;
  }
  
  
  /***********************************************************************
   *		FindWindowW (USER32.@)
   */
  HWND WINAPI FindWindowW( LPCWSTR className, LPCWSTR title )
  {
      return FindWindowExW( 0, 0, className, title );
  }
  
  
  /**********************************************************************
   *		GetDesktopWindow (USER32.@)
   */
  HWND WINAPI GetDesktopWindow(void)
  {
      struct user_thread_info *thread_info = get_user_thread_info();
  
      if (thread_info->top_window) return thread_info->top_window;
  
      SERVER_START_REQ( get_desktop_window )
      {
          req->force = 0;
          if (!wine_server_call( req ))
          {
              thread_info->top_window = wine_server_ptr_handle( reply->top_window );
              thread_info->msg_window = wine_server_ptr_handle( reply->msg_window );
          }
      }
      SERVER_END_REQ;
  
      if (!thread_info->top_window)
      {
          static const WCHAR explorer[] = {'\\','e','x','p','l','o','r','e','r','.','e','x','e',0};
          static const WCHAR args[] = {' ','/','d','e','s','k','t','o','p',0};
          STARTUPINFOW si;
          PROCESS_INFORMATION pi;
          WCHAR windir[MAX_PATH];
          WCHAR app[MAX_PATH + ARRAY_SIZE( explorer )];
          WCHAR cmdline[MAX_PATH + ARRAY_SIZE( explorer ) + ARRAY_SIZE( args )];
          WCHAR desktop[MAX_PATH];
          void *redir;
  
          SERVER_START_REQ( set_user_object_info )
          {
              req->handle = wine_server_obj_handle( GetThreadDesktop(GetCurrentThreadId()) );
              req->flags  = SET_USER_OBJECT_GET_FULL_NAME;
              wine_server_set_reply( req, desktop, sizeof(desktop) - sizeof(WCHAR) );
              if (!wine_server_call( req ))
              {
                  size_t size = wine_server_reply_size( reply );
                  desktop[size / sizeof(WCHAR)] = 0;
                  TRACE( "starting explorer for desktop %s\n", debugstr_w(desktop) );
              }
              else
                  desktop[0] = 0;
          }
          SERVER_END_REQ;
  
          memset( &si, 0, sizeof(si) );
          si.cb = sizeof(si);
          si.lpDesktop = *desktop ? desktop : NULL;
          si.dwFlags = STARTF_USESTDHANDLES;
          si.hStdInput  = 0;
          si.hStdOutput = 0;
          si.hStdError  = GetStdHandle( STD_ERROR_HANDLE );
  
          GetSystemDirectoryW( windir, MAX_PATH );
          strcpyW( app, windir );
          strcatW( app, explorer );
          strcpyW( cmdline, app );
          strcatW( cmdline, args );
  
          Wow64DisableWow64FsRedirection( &redir );
          if (CreateProcessW( app, cmdline, NULL, NULL, FALSE, DETACHED_PROCESS,
                              NULL, windir, &si, &pi ))
          {
              TRACE( "started explorer pid %04x tid %04x\n", pi.dwProcessId, pi.dwThreadId );
              WaitForInputIdle( pi.hProcess, 10000 );
              CloseHandle( pi.hThread );
              CloseHandle( pi.hProcess );
          }
          else WARN( "failed to start explorer, err %d\n", GetLastError() );
          Wow64RevertWow64FsRedirection( redir );
  
          SERVER_START_REQ( get_desktop_window )
          {
              req->force = 1;
              if (!wine_server_call( req ))
              {
                  thread_info->top_window = wine_server_ptr_handle( reply->top_window );
                  thread_info->msg_window = wine_server_ptr_handle( reply->msg_window );
              }
          }
          SERVER_END_REQ;
      }
  
      if (!thread_info->top_window || !USER_Driver->pCreateDesktopWindow( thread_info->top_window ))
          ERR( "failed to create desktop window\n" );
  
      return thread_info->top_window;
  }
  
  
  /*******************************************************************
   *		EnableWindow (USER32.@)
   */
  BOOL WINAPI EnableWindow( HWND hwnd, BOOL enable )
  {
      BOOL retvalue;
  
      if (is_broadcast(hwnd))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
  
      TRACE("( %p, %d )\n", hwnd, enable);
  
      if (enable)
      {
          retvalue = (WIN_SetStyle( hwnd, 0, WS_DISABLED ) & WS_DISABLED) != 0;
          if (retvalue) SendMessageW( hwnd, WM_ENABLE, TRUE, 0 );
      }
      else
      {
          SendMessageW( hwnd, WM_CANCELMODE, 0, 0 );
  
          retvalue = (WIN_SetStyle( hwnd, WS_DISABLED, 0 ) & WS_DISABLED) != 0;
          if (!retvalue)
          {
              if (hwnd == GetFocus())
                  SetFocus( 0 ); /* A disabled window can't have the focus */
  
              SendMessageW( hwnd, WM_ENABLE, FALSE, 0 );
          }
      }
      return retvalue;
  }
  
  
  /***********************************************************************
   *		IsWindowEnabled (USER32.@)
   */
  BOOL WINAPI IsWindowEnabled(HWND hWnd)
  {
      LONG ret;
  
      SetLastError(NO_ERROR);
      ret = GetWindowLongW( hWnd, GWL_STYLE );
      if (!ret && GetLastError() != NO_ERROR) return FALSE;
      return !(ret & WS_DISABLED);
  }
  
  /***********************************************************************
   *		IsWindowUnicode (USER32.@)
   */
  BOOL WINAPI IsWindowUnicode( HWND hwnd )
  {
      WND * wndPtr;
      BOOL retvalue = FALSE;
  
      if (!(wndPtr = WIN_GetPtr(hwnd))) return FALSE;
  
      if (wndPtr == WND_DESKTOP) return TRUE;
  
      if (wndPtr != WND_OTHER_PROCESS)
      {
          retvalue = (wndPtr->flags & WIN_ISUNICODE) != 0;
          WIN_ReleasePtr( wndPtr );
      }
      else
      {
          SERVER_START_REQ( get_window_info )
          {
              req->handle = wine_server_user_handle( hwnd );
              if (!wine_server_call_err( req )) retvalue = reply->is_unicode;
          }
          SERVER_END_REQ;
      }
      return retvalue;
  }
  
  
  /***********************************************************************
   *		GetWindowDpiAwarenessContext  (USER32.@)
   */
  DPI_AWARENESS_CONTEXT WINAPI GetWindowDpiAwarenessContext( HWND hwnd )
  {
      WND *win;
      DPI_AWARENESS_CONTEXT ret = 0;
  
      if (!(win = WIN_GetPtr( hwnd )))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
      if (win == WND_DESKTOP) return DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE;
      if (win != WND_OTHER_PROCESS)
      {
          ret = ULongToHandle( win->dpi_awareness | 0x10 );
          WIN_ReleasePtr( win );
      }
      else
      {
          SERVER_START_REQ( get_window_info )
          {
              req->handle = wine_server_user_handle( hwnd );
              if (!wine_server_call_err( req )) ret = ULongToHandle( reply->awareness | 0x10 );
          }
          SERVER_END_REQ;
      }
      return ret;
  }
  
  
  /***********************************************************************
   *              GetDpiForWindow   (USER32.@)
   */
  UINT WINAPI GetDpiForWindow( HWND hwnd )
  {
      WND *win;
      UINT ret = 0;
  
      if (!(win = WIN_GetPtr( hwnd )))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
      if (win == WND_DESKTOP)
      {
          POINT pt = { 0, 0 };
          return get_monitor_dpi( MonitorFromPoint( pt, MONITOR_DEFAULTTOPRIMARY ));
      }
      if (win != WND_OTHER_PROCESS)
      {
          ret = win->dpi;
          if (!ret) ret = get_win_monitor_dpi( hwnd );
          WIN_ReleasePtr( win );
      }
      else
      {
          SERVER_START_REQ( get_window_info )
          {
              req->handle = wine_server_user_handle( hwnd );
              if (!wine_server_call_err( req )) ret = reply->dpi;
          }
          SERVER_END_REQ;
      }
      return ret;
  }
  
  
  /**********************************************************************
   *	     WIN_GetWindowLong
   *
   * Helper function for GetWindowLong().
   */
  static LONG_PTR WIN_GetWindowLong( HWND hwnd, INT offset, UINT size, BOOL unicode )
  {
      LONG_PTR retvalue = 0;
      WND *wndPtr;
  
      if (offset == GWLP_HWNDPARENT)
      {
          HWND parent = GetAncestor( hwnd, GA_PARENT );
          if (parent == GetDesktopWindow()) parent = GetWindow( hwnd, GW_OWNER );
          return (ULONG_PTR)parent;
      }
  
      if (!(wndPtr = WIN_GetPtr( hwnd )))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
  
      if (wndPtr == WND_DESKTOP)
      {
          switch (offset)
          {
          case GWL_STYLE:
              retvalue = WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN; /* message parent is not visible */
              if (WIN_GetFullHandle( hwnd ) == GetDesktopWindow())
                  retvalue |= WS_VISIBLE;
              return retvalue;
          case GWL_EXSTYLE:
          case GWLP_USERDATA:
          case GWLP_ID:
          case GWLP_HINSTANCE:
              return 0;
          case GWLP_WNDPROC:
              SetLastError( ERROR_ACCESS_DENIED );
              return 0;
          }
          SetLastError( ERROR_INVALID_INDEX );
          return 0;
      }
  
      if (wndPtr == WND_OTHER_PROCESS)
      {
          if (offset == GWLP_WNDPROC)
          {
              SetLastError( ERROR_ACCESS_DENIED );
              return 0;
          }
          SERVER_START_REQ( set_window_info )
          {
              req->handle = wine_server_user_handle( hwnd );
              req->flags  = 0;  /* don't set anything, just retrieve */
              req->extra_offset = (offset >= 0) ? offset : -1;
              req->extra_size = (offset >= 0) ? size : 0;
              if (!wine_server_call_err( req ))
              {
                  switch(offset)
                  {
                  case GWL_STYLE:      retvalue = reply->old_style; break;
                  case GWL_EXSTYLE:    retvalue = reply->old_ex_style; break;
                  case GWLP_ID:        retvalue = reply->old_id; break;
                  case GWLP_HINSTANCE: retvalue = (ULONG_PTR)wine_server_get_ptr( reply->old_instance ); break;
                  case GWLP_USERDATA:  retvalue = reply->old_user_data; break;
                  default:
                      if (offset >= 0) retvalue = get_win_data( &reply->old_extra_value, size );
                      else SetLastError( ERROR_INVALID_INDEX );
                      break;
                  }
              }
          }
          SERVER_END_REQ;
          return retvalue;
      }
  
      /* now we have a valid wndPtr */
  
      if (offset >= 0)
      {
          if (offset > (int)(wndPtr->cbWndExtra - size))
          {
              WARN("Invalid offset %d\n", offset );
              WIN_ReleasePtr( wndPtr );
              SetLastError( ERROR_INVALID_INDEX );
              return 0;
          }
          retvalue = get_win_data( (char *)wndPtr->wExtra + offset, size );
  
          /* Special case for dialog window procedure */
          if ((offset == DWLP_DLGPROC) && (size == sizeof(LONG_PTR)) && wndPtr->dlgInfo)
              retvalue = (LONG_PTR)WINPROC_GetProc( (WNDPROC)retvalue, unicode );
          WIN_ReleasePtr( wndPtr );
          return retvalue;
      }
  
      switch(offset)
      {
      case GWLP_USERDATA:  retvalue = wndPtr->userdata; break;
      case GWL_STYLE:      retvalue = wndPtr->dwStyle; break;
      case GWL_EXSTYLE:    retvalue = wndPtr->dwExStyle; break;
      case GWLP_ID:        retvalue = wndPtr->wIDmenu; break;
      case GWLP_HINSTANCE: retvalue = (ULONG_PTR)wndPtr->hInstance; break;
      case GWLP_WNDPROC:
          /* This looks like a hack only for the edit control (see tests). This makes these controls
           * more tolerant to A/W mismatches. The lack of W->A->W conversion for such a mismatch suggests
           * that the hack is in GetWindowLongPtr[AW], not in winprocs.
           */
          if (wndPtr->winproc == BUILTIN_WINPROC(WINPROC_EDIT) && (!unicode != !(wndPtr->flags & WIN_ISUNICODE)))
              retvalue = (ULONG_PTR)wndPtr->winproc;
          else
              retvalue = (ULONG_PTR)WINPROC_GetProc( wndPtr->winproc, unicode );
          break;
      default:
          WARN("Unknown offset %d\n", offset );
          SetLastError( ERROR_INVALID_INDEX );
          break;
      }
      WIN_ReleasePtr(wndPtr);
      return retvalue;
  }
  
  
  /**********************************************************************
   *	     WIN_SetWindowLong
   *
   * Helper function for SetWindowLong().
   *
   * 0 is the failure code. However, in the case of failure SetLastError
   * must be set to distinguish between a 0 return value and a failure.
   */
  LONG_PTR WIN_SetWindowLong( HWND hwnd, INT offset, UINT size, LONG_PTR newval, BOOL unicode )
  {
      STYLESTRUCT style;
      BOOL ok, made_visible = FALSE;
      LONG_PTR retval = 0;
      WND *wndPtr;
  
      TRACE( "%p %d %lx %c\n", hwnd, offset, newval, unicode ? 'W' : 'A' );
  
      if (is_broadcast(hwnd))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
  
      if (!(wndPtr = WIN_GetPtr( hwnd )))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
      if (wndPtr == WND_DESKTOP)
      {
          /* can't change anything on the desktop window */
          SetLastError( ERROR_ACCESS_DENIED );
          return 0;
      }
      if (wndPtr == WND_OTHER_PROCESS)
      {
          if (offset == GWLP_WNDPROC)
          {
              SetLastError( ERROR_ACCESS_DENIED );
              return 0;
          }
          if (offset > 32767 || offset < -32767)
          {
              SetLastError( ERROR_INVALID_INDEX );
              return 0;
          }
          return SendMessageW( hwnd, WM_WINE_SETWINDOWLONG, MAKEWPARAM( offset, size ), newval );
      }
  
      /* first some special cases */
      switch( offset )
      {
      case GWL_STYLE:
          style.styleOld = wndPtr->dwStyle;
          style.styleNew = newval;
          WIN_ReleasePtr( wndPtr );
          SendMessageW( hwnd, WM_STYLECHANGING, GWL_STYLE, (LPARAM)&style );
          if (!(wndPtr = WIN_GetPtr( hwnd )) || wndPtr == WND_OTHER_PROCESS) return 0;
          newval = style.styleNew;
          /* WS_CLIPSIBLINGS can't be reset on top-level windows */
          if (wndPtr->parent == GetDesktopWindow()) newval |= WS_CLIPSIBLINGS;
          /* WS_MINIMIZE can't be reset */
          if (wndPtr->dwStyle & WS_MINIMIZE) newval |= WS_MINIMIZE;
          /* FIXME: changing WS_DLGFRAME | WS_THICKFRAME is supposed to change
             WS_EX_WINDOWEDGE too */
          break;
      case GWL_EXSTYLE:
          style.styleOld = wndPtr->dwExStyle;
          style.styleNew = newval;
          WIN_ReleasePtr( wndPtr );
          SendMessageW( hwnd, WM_STYLECHANGING, GWL_EXSTYLE, (LPARAM)&style );
          if (!(wndPtr = WIN_GetPtr( hwnd )) || wndPtr == WND_OTHER_PROCESS) return 0;
          /* WS_EX_TOPMOST can only be changed through SetWindowPos */
          newval = (style.styleNew & ~WS_EX_TOPMOST) | (wndPtr->dwExStyle & WS_EX_TOPMOST);
          /* WS_EX_WINDOWEDGE depends on some other styles */
          if (newval & WS_EX_DLGMODALFRAME)
              newval |= WS_EX_WINDOWEDGE;
          else if (!(newval & WS_EX_STATICEDGE) && (wndPtr->dwStyle & (WS_DLGFRAME | WS_THICKFRAME)))
              newval |= WS_EX_WINDOWEDGE;
          else
              newval &= ~WS_EX_WINDOWEDGE;
          break;
      case GWLP_HWNDPARENT:
          if (wndPtr->parent == GetDesktopWindow())
          {
              WIN_ReleasePtr( wndPtr );
              return (ULONG_PTR)WIN_SetOwner( hwnd, (HWND)newval );
          }
          else
          {
              WIN_ReleasePtr( wndPtr );
              return (ULONG_PTR)SetParent( hwnd, (HWND)newval );
          }
      case GWLP_WNDPROC:
      {
          WNDPROC proc;
          UINT old_flags = wndPtr->flags;
          retval = WIN_GetWindowLong( hwnd, offset, size, unicode );
          proc = WINPROC_AllocProc( (WNDPROC)newval, unicode );
          if (proc) wndPtr->winproc = proc;
          if (WINPROC_IsUnicode( proc, unicode )) wndPtr->flags |= WIN_ISUNICODE;
          else wndPtr->flags &= ~WIN_ISUNICODE;
          if (!((old_flags ^ wndPtr->flags) & WIN_ISUNICODE))
          {
              WIN_ReleasePtr( wndPtr );
              return retval;
          }
          /* update is_unicode flag on the server side */
          break;
      }
      case GWLP_ID:
      case GWLP_HINSTANCE:
      case GWLP_USERDATA:
          break;
      case DWLP_DLGPROC:
          if ((wndPtr->cbWndExtra - sizeof(LONG_PTR) >= DWLP_DLGPROC) &&
              (size == sizeof(LONG_PTR)) && wndPtr->dlgInfo)
          {
              WNDPROC *ptr = (WNDPROC *)((char *)wndPtr->wExtra + DWLP_DLGPROC);
              retval = (ULONG_PTR)WINPROC_GetProc( *ptr, unicode );
              *ptr = WINPROC_AllocProc( (WNDPROC)newval, unicode );
              WIN_ReleasePtr( wndPtr );
              return retval;
          }
          /* fall through */
      default:
          if (offset < 0 || offset > (int)(wndPtr->cbWndExtra - size))
          {
              WARN("Invalid offset %d\n", offset );
              WIN_ReleasePtr( wndPtr );
              SetLastError( ERROR_INVALID_INDEX );
              return 0;
          }
          else if (get_win_data( (char *)wndPtr->wExtra + offset, size ) == newval)
          {
              /* already set to the same value */
              WIN_ReleasePtr( wndPtr );
              return newval;
          }
          break;
      }
  
      SERVER_START_REQ( set_window_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->extra_offset = -1;
          switch(offset)
          {
          case GWL_STYLE:
              req->flags = SET_WIN_STYLE;
              req->style = newval;
              break;
          case GWL_EXSTYLE:
              req->flags = SET_WIN_EXSTYLE;
              req->ex_style = newval;
              break;
          case GWLP_ID:
              req->flags = SET_WIN_ID;
              req->id = newval;
              break;
          case GWLP_HINSTANCE:
              req->flags = SET_WIN_INSTANCE;
              req->instance = wine_server_client_ptr( (void *)newval );
              break;
          case GWLP_WNDPROC:
              req->flags = SET_WIN_UNICODE;
              req->is_unicode = (wndPtr->flags & WIN_ISUNICODE) != 0;
              break;
          case GWLP_USERDATA:
              req->flags = SET_WIN_USERDATA;
              req->user_data = newval;
              break;
          default:
              req->flags = SET_WIN_EXTRA;
              req->extra_offset = offset;
              req->extra_size = size;
              set_win_data( &req->extra_value, newval, size );
          }
          if ((ok = !wine_server_call_err( req )))
          {
              switch(offset)
              {
              case GWL_STYLE:
                  wndPtr->dwStyle = newval;
                  retval = reply->old_style;
                  break;
              case GWL_EXSTYLE:
                  wndPtr->dwExStyle = newval;
                  retval = reply->old_ex_style;
                  break;
              case GWLP_ID:
                  wndPtr->wIDmenu = newval;
                  retval = reply->old_id;
                  break;
              case GWLP_HINSTANCE:
                  wndPtr->hInstance = (HINSTANCE)newval;
                  retval = (ULONG_PTR)wine_server_get_ptr( reply->old_instance );
                  break;
              case GWLP_WNDPROC:
                  break;
              case GWLP_USERDATA:
                  wndPtr->userdata = newval;
                  retval = reply->old_user_data;
                  break;
              default:
                  retval = get_win_data( (char *)wndPtr->wExtra + offset, size );
                  set_win_data( (char *)wndPtr->wExtra + offset, newval, size );
                  break;
              }
          }
      }
      SERVER_END_REQ;
  
      if ((offset == GWL_STYLE && ((style.styleOld ^ style.styleNew) & WS_VISIBLE)) ||
          (offset == GWL_EXSTYLE && ((style.styleOld ^ style.styleNew) & WS_EX_LAYERED)))
      {
          made_visible = (wndPtr->dwStyle & WS_VISIBLE) != 0;
          invalidate_dce( wndPtr, NULL );
      }
      WIN_ReleasePtr( wndPtr );
  
      if (!ok) return 0;
  
      if (offset == GWL_STYLE || offset == GWL_EXSTYLE)
      {
          style.styleOld = retval;
          style.styleNew = newval;
          USER_Driver->pSetWindowStyle( hwnd, offset, &style );
          if (made_visible) update_window_state( hwnd );
          SendMessageW( hwnd, WM_STYLECHANGED, offset, (LPARAM)&style );
      }
  
      return retval;
  }
  
  
  /**********************************************************************
   *		GetWindowWord (USER32.@)
   */
  WORD WINAPI GetWindowWord( HWND hwnd, INT offset )
  {
      switch(offset)
      {
      case GWLP_ID:
      case GWLP_HINSTANCE:
      case GWLP_HWNDPARENT:
          break;
      default:
          if (offset < 0)
          {
              WARN("Invalid offset %d\n", offset );
              SetLastError( ERROR_INVALID_INDEX );
              return 0;
          }
          break;
      }
      return WIN_GetWindowLong( hwnd, offset, sizeof(WORD), FALSE );
  }
  
  
  /**********************************************************************
   *		GetWindowLongA (USER32.@)
   */
  LONG WINAPI GetWindowLongA( HWND hwnd, INT offset )
  {
      switch (offset)
      {
  #ifdef _WIN64
      case GWLP_WNDPROC:
      case GWLP_HINSTANCE:
      case GWLP_HWNDPARENT:
          WARN( "Invalid offset %d\n", offset );
          SetLastError( ERROR_INVALID_INDEX );
          return 0;
  #endif
      default:
          return WIN_GetWindowLong( hwnd, offset, sizeof(LONG), FALSE );
      }
  }
  
  
  /**********************************************************************
   *		GetWindowLongW (USER32.@)
   */
  LONG WINAPI GetWindowLongW( HWND hwnd, INT offset )
  {
      switch (offset)
      {
  #ifdef _WIN64
      case GWLP_WNDPROC:
      case GWLP_HINSTANCE:
      case GWLP_HWNDPARENT:
          WARN( "Invalid offset %d\n", offset );
          SetLastError( ERROR_INVALID_INDEX );
          return 0;
  #endif
      default:
          return WIN_GetWindowLong( hwnd, offset, sizeof(LONG), TRUE );
      }
  }
  
  
  /**********************************************************************
   *		SetWindowWord (USER32.@)
   */
  WORD WINAPI SetWindowWord( HWND hwnd, INT offset, WORD newval )
  {
      switch(offset)
      {
      case GWLP_ID:
      case GWLP_HINSTANCE:
      case GWLP_HWNDPARENT:
          break;
      default:
          if (offset < 0)
          {
              WARN("Invalid offset %d\n", offset );
              SetLastError( ERROR_INVALID_INDEX );
              return 0;
          }
          break;
      }
      return WIN_SetWindowLong( hwnd, offset, sizeof(WORD), newval, FALSE );
  }
  
  
  /**********************************************************************
   *		SetWindowLongA (USER32.@)
   *
   * See SetWindowLongW.
   */
  LONG WINAPI DECLSPEC_HOTPATCH SetWindowLongA( HWND hwnd, INT offset, LONG newval )
  {
      switch (offset)
      {
  #ifdef _WIN64
      case GWLP_WNDPROC:
      case GWLP_HINSTANCE:
      case GWLP_HWNDPARENT:
          WARN( "Invalid offset %d\n", offset );
          SetLastError( ERROR_INVALID_INDEX );
          return 0;
  #endif
      default:
          return WIN_SetWindowLong( hwnd, offset, sizeof(LONG), newval, FALSE );
      }
  }
  
  
  /**********************************************************************
   *		SetWindowLongW (USER32.@) Set window attribute
   *
   * SetWindowLong() alters one of a window's attributes or sets a 32-bit (long)
   * value in a window's extra memory.
   *
   * The _hwnd_ parameter specifies the handle to a window that
   * has extra memory. The _newval_ parameter contains the new
   * attribute or extra memory value.  If positive, the _offset_
   * parameter is the byte-addressed location in the window's extra
   * memory to set.  If negative, _offset_ specifies the window
   * attribute to set, and should be one of the following values:
   *
   * GWL_EXSTYLE      The window's extended window style
   *
   * GWL_STYLE        The window's window style.
   *
   * GWLP_WNDPROC     Pointer to the window's window procedure.
   *
   * GWLP_HINSTANCE   The window's application instance handle.
   *
   * GWLP_ID          The window's identifier.
   *
   * GWLP_USERDATA    The window's user-specified data.
   *
   * If the window is a dialog box, the _offset_ parameter can be one of
   * the following values:
   *
   * DWLP_DLGPROC     The address of the window's dialog box procedure.
   *
   * DWLP_MSGRESULT   The return value of a message
   *                  that the dialog box procedure processed.
   *
   * DWLP_USER        Application specific information.
   *
   * RETURNS
   *
   * If successful, returns the previous value located at _offset_. Otherwise,
   * returns 0.
   *
   * NOTES
   *
   * Extra memory for a window class is specified by a nonzero cbWndExtra
   * parameter of the WNDCLASS structure passed to RegisterClass() at the
   * time of class creation.
   *
   * Using GWL_WNDPROC to set a new window procedure effectively creates
   * a window subclass. Use CallWindowProc() in the new windows procedure
   * to pass messages to the superclass's window procedure.
   *
   * The user data is reserved for use by the application which created
   * the window.
   *
   * Do not use GWL_STYLE to change the window's WS_DISABLED style;
   * instead, call the EnableWindow() function to change the window's
   * disabled state.
   *
   * Do not use GWL_HWNDPARENT to reset the window's parent, use
   * SetParent() instead.
   *
   * Win95:
   * When offset is GWL_STYLE and the calling app's ver is 4.0,
   * it sends WM_STYLECHANGING before changing the settings
   * and WM_STYLECHANGED afterwards.
   * App ver 4.0 can't use SetWindowLong to change WS_EX_TOPMOST.
   */
  LONG WINAPI DECLSPEC_HOTPATCH SetWindowLongW(
      HWND hwnd,  /* [in] window to alter */
      INT offset, /* [in] offset, in bytes, of location to alter */
      LONG newval /* [in] new value of location */
  )
  {
      switch (offset)
      {
  #ifdef _WIN64
      case GWLP_WNDPROC:
      case GWLP_HINSTANCE:
      case GWLP_HWNDPARENT:
          WARN("Invalid offset %d\n", offset );
          SetLastError( ERROR_INVALID_INDEX );
          return 0;
  #endif
      default:
          return WIN_SetWindowLong( hwnd, offset, sizeof(LONG), newval, TRUE );
      }
  }
  
  
  /*******************************************************************
   *		GetWindowTextA (USER32.@)
   */
  INT WINAPI GetWindowTextA( HWND hwnd, LPSTR lpString, INT nMaxCount )
  {
      WCHAR *buffer;
  
      if (!lpString || nMaxCount <= 0) return 0;
  
      if (WIN_IsCurrentProcess( hwnd ))
      {
          lpString[0] = 0;
          return (INT)SendMessageA( hwnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString );
      }
  
      /* when window belongs to other process, don't send a message */
      if (!(buffer = HeapAlloc( GetProcessHeap(), 0, nMaxCount * sizeof(WCHAR) ))) return 0;
      get_server_window_text( hwnd, buffer, nMaxCount );
      if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, lpString, nMaxCount, NULL, NULL ))
          lpString[nMaxCount-1] = 0;
      HeapFree( GetProcessHeap(), 0, buffer );
      return strlen(lpString);
  }
  
  
  /*******************************************************************
   *		InternalGetWindowText (USER32.@)
   */
  INT WINAPI InternalGetWindowText(HWND hwnd,LPWSTR lpString,INT nMaxCount )
  {
      WND *win;
  
      if (nMaxCount <= 0) return 0;
      if (!(win = WIN_GetPtr( hwnd ))) return 0;
      if (win == WND_DESKTOP) lpString[0] = 0;
      else if (win != WND_OTHER_PROCESS)
      {
          if (win->text) lstrcpynW( lpString, win->text, nMaxCount );
          else lpString[0] = 0;
          WIN_ReleasePtr( win );
      }
      else
      {
          get_server_window_text( hwnd, lpString, nMaxCount );
      }
      return strlenW(lpString);
  }
  
  
  /*******************************************************************
   *		GetWindowTextW (USER32.@)
   */
  INT WINAPI GetWindowTextW( HWND hwnd, LPWSTR lpString, INT nMaxCount )
  {
      if (!lpString || nMaxCount <= 0) return 0;
  
      if (WIN_IsCurrentProcess( hwnd ))
      {
          lpString[0] = 0;
          return (INT)SendMessageW( hwnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString );
      }
  
      /* when window belongs to other process, don't send a message */
      get_server_window_text( hwnd, lpString, nMaxCount );
      return strlenW(lpString);
  }
  
  
  /*******************************************************************
   *		SetWindowTextA (USER32.@)
   *		SetWindowText  (USER32.@)
   */
  BOOL WINAPI DECLSPEC_HOTPATCH SetWindowTextA( HWND hwnd, LPCSTR lpString )
  {
      if (is_broadcast(hwnd))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
      if (!WIN_IsCurrentProcess( hwnd ))
          WARN( "setting text %s of other process window %p should not use SendMessage\n",
                 debugstr_a(lpString), hwnd );
      return (BOOL)SendMessageA( hwnd, WM_SETTEXT, 0, (LPARAM)lpString );
  }
  
  
  /*******************************************************************
   *		SetWindowTextW (USER32.@)
   */
  BOOL WINAPI DECLSPEC_HOTPATCH SetWindowTextW( HWND hwnd, LPCWSTR lpString )
  {
      if (is_broadcast(hwnd))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
      if (!WIN_IsCurrentProcess( hwnd ))
          WARN( "setting text %s of other process window %p should not use SendMessage\n",
                 debugstr_w(lpString), hwnd );
      return (BOOL)SendMessageW( hwnd, WM_SETTEXT, 0, (LPARAM)lpString );
  }
  
  
  /*******************************************************************
   *		GetWindowTextLengthA (USER32.@)
   */
  INT WINAPI GetWindowTextLengthA( HWND hwnd )
  {
      CPINFO info;
  
      if (WIN_IsCurrentProcess( hwnd )) return SendMessageA( hwnd, WM_GETTEXTLENGTH, 0, 0 );
  
      /* when window belongs to other process, don't send a message */
      GetCPInfo( CP_ACP, &info );
      return get_server_window_text( hwnd, NULL, 0 ) * info.MaxCharSize;
  }
  
  /*******************************************************************
   *		GetWindowTextLengthW (USER32.@)
   */
  INT WINAPI GetWindowTextLengthW( HWND hwnd )
  {
      if (WIN_IsCurrentProcess( hwnd )) return SendMessageW( hwnd, WM_GETTEXTLENGTH, 0, 0 );
  
      /* when window belongs to other process, don't send a message */
      return get_server_window_text( hwnd, NULL, 0 );
  }
  
  
  /*******************************************************************
   *		IsWindow (USER32.@)
   */
  BOOL WINAPI IsWindow( HWND hwnd )
  {
      WND *ptr;
      BOOL ret;
  
      if (!(ptr = WIN_GetPtr( hwnd ))) return FALSE;
      if (ptr == WND_DESKTOP) return TRUE;
  
      if (ptr != WND_OTHER_PROCESS)
      {
          WIN_ReleasePtr( ptr );
          return TRUE;
      }
  
      /* check other processes */
      SERVER_START_REQ( get_window_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          ret = !wine_server_call_err( req );
      }
      SERVER_END_REQ;
      return ret;
  }
  
  
  /***********************************************************************
   *		GetWindowThreadProcessId (USER32.@)
   */
  DWORD WINAPI GetWindowThreadProcessId( HWND hwnd, LPDWORD process )
  {
      WND *ptr;
      DWORD tid = 0;
  
      if (!(ptr = WIN_GetPtr( hwnd )))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE);
          return 0;
      }
  
      if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP)
      {
          /* got a valid window */
          tid = ptr->tid;
          if (process) *process = GetCurrentProcessId();
          WIN_ReleasePtr( ptr );
          return tid;
      }
  
      /* check other processes */
      SERVER_START_REQ( get_window_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          if (!wine_server_call_err( req ))
          {
              tid = (DWORD)reply->tid;
              if (process) *process = (DWORD)reply->pid;
          }
      }
      SERVER_END_REQ;
      return tid;
  }
  
  
  /*****************************************************************
   *		GetParent (USER32.@)
   */
  HWND WINAPI GetParent( HWND hwnd )
  {
      WND *wndPtr;
      HWND retvalue = 0;
  
      if (!(wndPtr = WIN_GetPtr( hwnd )))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
      if (wndPtr == WND_DESKTOP) return 0;
      if (wndPtr == WND_OTHER_PROCESS)
      {
          LONG style = GetWindowLongW( hwnd, GWL_STYLE );
          if (style & (WS_POPUP | WS_CHILD))
          {
              SERVER_START_REQ( get_window_tree )
              {
                  req->handle = wine_server_user_handle( hwnd );
                  if (!wine_server_call_err( req ))
                  {
                      if (style & WS_POPUP) retvalue = wine_server_ptr_handle( reply->owner );
                      else if (style & WS_CHILD) retvalue = wine_server_ptr_handle( reply->parent );
                  }
              }
              SERVER_END_REQ;
          }
      }
      else
      {
          if (wndPtr->dwStyle & WS_POPUP) retvalue = wndPtr->owner;
          else if (wndPtr->dwStyle & WS_CHILD) retvalue = wndPtr->parent;
          WIN_ReleasePtr( wndPtr );
      }
      return retvalue;
  }
  
  
  /*****************************************************************
   *		GetAncestor (USER32.@)
   */
  HWND WINAPI GetAncestor( HWND hwnd, UINT type )
  {
      WND *win;
      HWND *list, ret = 0;
  
      switch(type)
      {
      case GA_PARENT:
          if (!(win = WIN_GetPtr( hwnd )))
          {
              SetLastError( ERROR_INVALID_WINDOW_HANDLE );
              return 0;
          }
          if (win == WND_DESKTOP) return 0;
          if (win != WND_OTHER_PROCESS)
          {
              ret = win->parent;
              WIN_ReleasePtr( win );
          }
          else /* need to query the server */
          {
              SERVER_START_REQ( get_window_tree )
              {
                  req->handle = wine_server_user_handle( hwnd );
                  if (!wine_server_call_err( req )) ret = wine_server_ptr_handle( reply->parent );
              }
              SERVER_END_REQ;
          }
          break;
  
      case GA_ROOT:
          if (!(list = list_window_parents( hwnd ))) return 0;
  
          if (!list[0] || !list[1]) ret = WIN_GetFullHandle( hwnd );  /* top-level window */
          else
          {
              int count = 2;
              while (list[count]) count++;
              ret = list[count - 2];  /* get the one before the desktop */
          }
          HeapFree( GetProcessHeap(), 0, list );
          break;
  
      case GA_ROOTOWNER:
          if (is_desktop_window( hwnd )) return 0;
          ret = WIN_GetFullHandle( hwnd );
          for (;;)
          {
              HWND parent = GetParent( ret );
              if (!parent) break;
              ret = parent;
          }
          break;
      }
      return ret;
  }
  
  
  /*****************************************************************
   *		SetParent (USER32.@)
   */
  HWND WINAPI SetParent( HWND hwnd, HWND parent )
  {
      WINDOWPOS winpos;
      HWND full_handle;
      HWND old_parent = 0;
      BOOL was_visible;
      WND *wndPtr;
      BOOL ret;
      DPI_AWARENESS_CONTEXT context;
      RECT window_rect, old_screen_rect, new_screen_rect;
  
      TRACE("(%p %p)\n", hwnd, parent);
  
      if (is_broadcast(hwnd) || is_broadcast(parent))
      {
          SetLastError(ERROR_INVALID_PARAMETER);
          return 0;
      }
  
      if (!parent) parent = GetDesktopWindow();
      else if (parent == HWND_MESSAGE) parent = get_hwnd_message_parent();
      else parent = WIN_GetFullHandle( parent );
  
      if (!IsWindow( parent ))
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
  
      /* Some applications try to set a child as a parent */
      if (IsChild(hwnd, parent))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return 0;
      }
  
      if (!(full_handle = WIN_IsCurrentThread( hwnd )))
          return (HWND)SendMessageW( hwnd, WM_WINE_SETPARENT, (WPARAM)parent, 0 );
  
      if (full_handle == parent)
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return 0;
      }
  
      /* Windows hides the window first, then shows it again
       * including the WM_SHOWWINDOW messages and all */
      was_visible = ShowWindow( hwnd, SW_HIDE );
  
      wndPtr = WIN_GetPtr( hwnd );
      if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return 0;
  
      context = SetThreadDpiAwarenessContext( GetWindowDpiAwarenessContext( hwnd ));
      WIN_GetRectangles( hwnd, COORDS_PARENT, &window_rect, NULL );
      SetThreadDpiAwarenessContext( DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE );
      WIN_GetRectangles( hwnd, COORDS_SCREEN, &old_screen_rect, NULL );
      SetThreadDpiAwarenessContext( context );
  
      SERVER_START_REQ( set_parent )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->parent = wine_server_user_handle( parent );
          if ((ret = !wine_server_call( req )))
          {
              old_parent = wine_server_ptr_handle( reply->old_parent );
              wndPtr->parent = parent = wine_server_ptr_handle( reply->full_parent );
              wndPtr->dpi = reply->dpi;
              wndPtr->dpi_awareness = reply->awareness;
          }
  
      }
      SERVER_END_REQ;
      WIN_ReleasePtr( wndPtr );
      if (!ret) return 0;
  
      context = SetThreadDpiAwarenessContext( DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE );
      WIN_GetRectangles( hwnd, COORDS_SCREEN, &new_screen_rect, NULL );
      SetThreadDpiAwarenessContext( GetWindowDpiAwarenessContext( hwnd ));
  
      USER_Driver->pSetParent( full_handle, parent, old_parent );
  
      winpos.hwnd = hwnd;
      winpos.hwndInsertAfter = HWND_TOP;
      winpos.x = window_rect.left;
      winpos.y = window_rect.top;
      winpos.cx = 0;
      winpos.cy = 0;
      winpos.flags = SWP_NOSIZE;
  
      USER_SetWindowPos( &winpos, new_screen_rect.left - old_screen_rect.left,
                         new_screen_rect.top - old_screen_rect.top );
  
      if (was_visible) ShowWindow( hwnd, SW_SHOW );
  
      SetThreadDpiAwarenessContext( context );
      return old_parent;
  }
  
  
  /*******************************************************************
   *		IsChild (USER32.@)
   */
  BOOL WINAPI IsChild( HWND parent, HWND child )
  {
      HWND *list;
      int i;
      BOOL ret = FALSE;
  
      if (!(GetWindowLongW( child, GWL_STYLE ) & WS_CHILD)) return FALSE;
      if (!(list = list_window_parents( child ))) return FALSE;
      parent = WIN_GetFullHandle( parent );
      for (i = 0; list[i]; i++)
      {
          if (list[i] == parent)
          {
              ret = list[i] && list[i+1];
              break;
          }
          if (!(GetWindowLongW( list[i], GWL_STYLE ) & WS_CHILD)) break;
      }
      HeapFree( GetProcessHeap(), 0, list );
      return ret;
  }
  
  
  /***********************************************************************
   *		IsWindowVisible (USER32.@)
   */
  BOOL WINAPI IsWindowVisible( HWND hwnd )
  {
      HWND *list;
      BOOL retval = TRUE;
      int i;
  
      if (!(GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE)) return FALSE;
      if (!(list = list_window_parents( hwnd ))) return TRUE;
      if (list[0])
      {
          for (i = 0; list[i+1]; i++)
              if (!(GetWindowLongW( list[i], GWL_STYLE ) & WS_VISIBLE)) break;
          retval = !list[i+1] && (list[i] == GetDesktopWindow());  /* top message window isn't visible */
      }
      HeapFree( GetProcessHeap(), 0, list );
      return retval;
  }
  
  
  /***********************************************************************
   *           WIN_IsWindowDrawable
   *
   * hwnd is drawable when it is visible, all parents are not
   * minimized, and it is itself not minimized unless we are
   * trying to draw its default class icon.
   */
  BOOL WIN_IsWindowDrawable( HWND hwnd, BOOL icon )
  {
      HWND *list;
      BOOL retval = TRUE;
      int i;
      LONG style = GetWindowLongW( hwnd, GWL_STYLE );
  
      if (!(style & WS_VISIBLE)) return FALSE;
      if ((style & WS_MINIMIZE) && icon && GetClassLongPtrW( hwnd, GCLP_HICON ))  return FALSE;
  
      if (!(list = list_window_parents( hwnd ))) return TRUE;
      if (list[0])
      {
          for (i = 0; list[i+1]; i++)
              if ((GetWindowLongW( list[i], GWL_STYLE ) & (WS_VISIBLE|WS_MINIMIZE)) != WS_VISIBLE)
                  break;
          retval = !list[i+1] && (list[i] == GetDesktopWindow());  /* top message window isn't visible */
      }
      HeapFree( GetProcessHeap(), 0, list );
      return retval;
  }
  
  
  /*******************************************************************
   *		GetTopWindow (USER32.@)
   */
  HWND WINAPI GetTopWindow( HWND hwnd )
  {
      if (!hwnd) hwnd = GetDesktopWindow();
      return GetWindow( hwnd, GW_CHILD );
  }
  
  
  /*******************************************************************
   *		GetWindow (USER32.@)
   */
  HWND WINAPI GetWindow( HWND hwnd, UINT rel )
  {
      HWND retval = 0;
  
      if (rel == GW_OWNER)  /* this one may be available locally */
      {
          WND *wndPtr = WIN_GetPtr( hwnd );
          if (!wndPtr)
          {
              SetLastError( ERROR_INVALID_HANDLE );
              return 0;
          }
          if (wndPtr == WND_DESKTOP) return 0;
          if (wndPtr != WND_OTHER_PROCESS)
          {
              retval = wndPtr->owner;
              WIN_ReleasePtr( wndPtr );
              return retval;
          }
          /* else fall through to server call */
      }
  
      SERVER_START_REQ( get_window_tree )
      {
          req->handle = wine_server_user_handle( hwnd );
          if (!wine_server_call_err( req ))
          {
              switch(rel)
              {
              case GW_HWNDFIRST:
                  retval = wine_server_ptr_handle( reply->first_sibling );
                  break;
              case GW_HWNDLAST:
                  retval = wine_server_ptr_handle( reply->last_sibling );
                  break;
              case GW_HWNDNEXT:
                  retval = wine_server_ptr_handle( reply->next_sibling );
                  break;
              case GW_HWNDPREV:
                  retval = wine_server_ptr_handle( reply->prev_sibling );
                  break;
              case GW_OWNER:
                  retval = wine_server_ptr_handle( reply->owner );
                  break;
              case GW_CHILD:
                  retval = wine_server_ptr_handle( reply->first_child );
                  break;
              }
          }
      }
      SERVER_END_REQ;
      return retval;
  }
  
  
  /*******************************************************************
   *		ShowOwnedPopups (USER32.@)
   */
  BOOL WINAPI ShowOwnedPopups( HWND owner, BOOL fShow )
  {
      int count = 0;
      HWND *win_array = WIN_ListChildren( GetDesktopWindow() );
  
      if (!win_array) return TRUE;
  
      while (win_array[count]) count++;
      while (--count >= 0)
      {
          if (GetWindow( win_array[count], GW_OWNER ) != owner) continue;
          if (fShow)
          {
              if (win_get_flags( win_array[count] ) & WIN_NEEDS_SHOW_OWNEDPOPUP)
                  /* In Windows, ShowOwnedPopups(TRUE) generates
                   * WM_SHOWWINDOW messages with SW_PARENTOPENING,
                   * regardless of the state of the owner
                   */
                  SendMessageW(win_array[count], WM_SHOWWINDOW, SW_SHOWNORMAL, SW_PARENTOPENING);
          }
          else
          {
              if (GetWindowLongW( win_array[count], GWL_STYLE ) & WS_VISIBLE)
                  /* In Windows, ShowOwnedPopups(FALSE) generates
                   * WM_SHOWWINDOW messages with SW_PARENTCLOSING,
                   * regardless of the state of the owner
                   */
                  SendMessageW(win_array[count], WM_SHOWWINDOW, SW_HIDE, SW_PARENTCLOSING);
          }
      }
      HeapFree( GetProcessHeap(), 0, win_array );
      return TRUE;
  }
  
  
  /*******************************************************************
   *		GetLastActivePopup (USER32.@)
   */
  HWND WINAPI GetLastActivePopup( HWND hwnd )
  {
      HWND retval = hwnd;
  
      SERVER_START_REQ( get_window_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          if (!wine_server_call_err( req )) retval = wine_server_ptr_handle( reply->last_active );
      }
      SERVER_END_REQ;
      return retval;
  }
  
  
  /*******************************************************************
   *           WIN_ListChildren
   *
   * Build an array of the children of a given window. The array must be
   * freed with HeapFree. Returns NULL when no windows are found.
   */
  HWND *WIN_ListChildren( HWND hwnd )
  {
      if (!hwnd)
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return NULL;
      }
      return list_window_children( 0, hwnd, NULL, 0 );
  }
  
  
  /*******************************************************************
   *		EnumWindows (USER32.@)
   */
  BOOL WINAPI EnumWindows( WNDENUMPROC lpEnumFunc, LPARAM lParam )
  {
      HWND *list;
      BOOL ret = TRUE;
      int i;
  
      USER_CheckNotLock();
  
      /* We have to build a list of all windows first, to avoid */
      /* unpleasant side-effects, for instance if the callback */
      /* function changes the Z-order of the windows.          */
  
      if (!(list = WIN_ListChildren( GetDesktopWindow() ))) return TRUE;
  
      /* Now call the callback function for every window */
  
      for (i = 0; list[i]; i++)
      {
          /* Make sure that the window still exists */
          if (!IsWindow( list[i] )) continue;
          if (!(ret = lpEnumFunc( list[i], lParam ))) break;
      }
      HeapFree( GetProcessHeap(), 0, list );
      return ret;
  }
  
  
  /**********************************************************************
   *		EnumThreadWindows (USER32.@)
   */
  BOOL WINAPI EnumThreadWindows( DWORD id, WNDENUMPROC func, LPARAM lParam )
  {
      HWND *list;
      int i;
      BOOL ret = TRUE;
  
      USER_CheckNotLock();
  
      if (!(list = list_window_children( 0, GetDesktopWindow(), NULL, id ))) return TRUE;
  
      /* Now call the callback function for every window */
  
      for (i = 0; list[i]; i++)
          if (!(ret = func( list[i], lParam ))) break;
      HeapFree( GetProcessHeap(), 0, list );
      return ret;
  }
  
  
  /***********************************************************************
   *              EnumDesktopWindows   (USER32.@)
   */
  BOOL WINAPI EnumDesktopWindows( HDESK desktop, WNDENUMPROC func, LPARAM lparam )
  {
      HWND *list;
      int i;
  
      USER_CheckNotLock();
  
      if (!(list = list_window_children( desktop, 0, NULL, 0 ))) return TRUE;
  
      for (i = 0; list[i]; i++)
          if (!func( list[i], lparam )) break;
      HeapFree( GetProcessHeap(), 0, list );
      return TRUE;
  }
  
  
  #ifdef __i386__
  /* Some apps pass a non-stdcall proc to EnumChildWindows,
   * so we need a small assembly wrapper to call the proc.
   */
  extern LRESULT enum_callback_wrapper( WNDENUMPROC proc, HWND hwnd, LPARAM lparam );
  __ASM_GLOBAL_FUNC( enum_callback_wrapper,
      "pushl %ebp\n\t"
      __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
      __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
      "movl %esp,%ebp\n\t"
      __ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
      "pushl 16(%ebp)\n\t"
      "pushl 12(%ebp)\n\t"
      "call *8(%ebp)\n\t"
      "leave\n\t"
      __ASM_CFI(".cfi_def_cfa %esp,4\n\t")
      __ASM_CFI(".cfi_same_value %ebp\n\t")
      "ret" )
  #else
  static inline LRESULT enum_callback_wrapper( WNDENUMPROC proc, HWND hwnd, LPARAM lparam )
  {
      return proc( hwnd, lparam );
  }
  #endif /* __i386__ */
  
  /**********************************************************************
   *           WIN_EnumChildWindows
   *
   * Helper function for EnumChildWindows().
   */
  static BOOL WIN_EnumChildWindows( HWND *list, WNDENUMPROC func, LPARAM lParam )
  {
      HWND *childList;
      BOOL ret = FALSE;
  
      for ( ; *list; list++)
      {
          /* Make sure that the window still exists */
          if (!IsWindow( *list )) continue;
          /* Build children list first */
          childList = WIN_ListChildren( *list );
  
          ret = enum_callback_wrapper( func, *list, lParam );
  
          if (childList)
          {
              if (ret) ret = WIN_EnumChildWindows( childList, func, lParam );
              HeapFree( GetProcessHeap(), 0, childList );
          }
          if (!ret) return FALSE;
      }
      return TRUE;
  }
  
  
  /**********************************************************************
   *		EnumChildWindows (USER32.@)
   */
  BOOL WINAPI EnumChildWindows( HWND parent, WNDENUMPROC func, LPARAM lParam )
  {
      HWND *list;
      BOOL ret;
  
      USER_CheckNotLock();
  
      if (!(list = WIN_ListChildren( parent ))) return FALSE;
      ret = WIN_EnumChildWindows( list, func, lParam );
      HeapFree( GetProcessHeap(), 0, list );
      return ret;
  }
  
  
  /*******************************************************************
   *		AnyPopup (USER32.@)
   */
  BOOL WINAPI AnyPopup(void)
  {
      int i;
      BOOL retvalue;
      HWND *list = WIN_ListChildren( GetDesktopWindow() );
  
      if (!list) return FALSE;
      for (i = 0; list[i]; i++)
      {
          if (IsWindowVisible( list[i] ) && GetWindow( list[i], GW_OWNER )) break;
      }
      retvalue = (list[i] != 0);
      HeapFree( GetProcessHeap(), 0, list );
      return retvalue;
  }
  
  
  /*******************************************************************
   *		FlashWindow (USER32.@)
   */
  BOOL WINAPI FlashWindow( HWND hWnd, BOOL bInvert )
  {
      FLASHWINFO finfo;
  
      finfo.cbSize = sizeof(FLASHWINFO);
      finfo.dwFlags = bInvert ? FLASHW_ALL : FLASHW_STOP;
      finfo.uCount = 1;
      finfo.dwTimeout = 0;
      finfo.hwnd = hWnd;
      return FlashWindowEx( &finfo );
  }
  
  /*******************************************************************
   *		FlashWindowEx (USER32.@)
   */
  BOOL WINAPI FlashWindowEx( PFLASHWINFO pfinfo )
  {
      WND *wndPtr;
  
      TRACE( "%p\n", pfinfo );
  
      if (!pfinfo)
      {
          SetLastError( ERROR_NOACCESS );
          return FALSE;
      }
  
      if (!pfinfo->hwnd || pfinfo->cbSize != sizeof(FLASHWINFO) || !IsWindow( pfinfo->hwnd ))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
      FIXME( "%p - semi-stub\n", pfinfo );
  
      if (IsIconic( pfinfo->hwnd ))
      {
          RedrawWindow( pfinfo->hwnd, 0, 0, RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_FRAME );
  
          wndPtr = WIN_GetPtr( pfinfo->hwnd );
          if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return FALSE;
          if (pfinfo->dwFlags && !(wndPtr->flags & WIN_NCACTIVATED))
          {
              wndPtr->flags |= WIN_NCACTIVATED;
          }
          else
          {
              wndPtr->flags &= ~WIN_NCACTIVATED;
          }
          WIN_ReleasePtr( wndPtr );
          USER_Driver->pFlashWindowEx( pfinfo );
          return TRUE;
      }
      else
      {
          WPARAM wparam;
          HWND hwnd = pfinfo->hwnd;
  
          wndPtr = WIN_GetPtr( hwnd );
          if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return FALSE;
          hwnd = wndPtr->obj.handle;  /* make it a full handle */
  
          if (pfinfo->dwFlags) wparam = !(wndPtr->flags & WIN_NCACTIVATED);
          else wparam = (hwnd == GetForegroundWindow());
  
          WIN_ReleasePtr( wndPtr );
          SendMessageW( hwnd, WM_NCACTIVATE, wparam, 0 );
          USER_Driver->pFlashWindowEx( pfinfo );
          return wparam;
      }
  }
  
  /*******************************************************************
   *		GetWindowContextHelpId (USER32.@)
   */
  DWORD WINAPI GetWindowContextHelpId( HWND hwnd )
  {
      DWORD retval;
      WND *wnd = WIN_GetPtr( hwnd );
      if (!wnd || wnd == WND_DESKTOP) return 0;
      if (wnd == WND_OTHER_PROCESS)
      {
          if (IsWindow( hwnd )) FIXME( "not supported on other process window %p\n", hwnd );
          return 0;
      }
      retval = wnd->helpContext;
      WIN_ReleasePtr( wnd );
      return retval;
  }
  
  
  /*******************************************************************
   *		SetWindowContextHelpId (USER32.@)
   */
  BOOL WINAPI SetWindowContextHelpId( HWND hwnd, DWORD id )
  {
      WND *wnd = WIN_GetPtr( hwnd );
      if (!wnd || wnd == WND_DESKTOP) return FALSE;
      if (wnd == WND_OTHER_PROCESS)
      {
          if (IsWindow( hwnd )) FIXME( "not supported on other process window %p\n", hwnd );
          return FALSE;
      }
      wnd->helpContext = id;
      WIN_ReleasePtr( wnd );
      return TRUE;
  }
  
  
  /*******************************************************************
   *		DragDetect (USER32.@)
   */
  BOOL WINAPI DragDetect( HWND hWnd, POINT pt )
  {
      MSG msg;
      RECT rect;
      WORD wDragWidth = GetSystemMetrics(SM_CXDRAG);
      WORD wDragHeight= GetSystemMetrics(SM_CYDRAG);
  
      SetRect(&rect, pt.x - wDragWidth, pt.y - wDragHeight, pt.x + wDragWidth, pt.y + wDragHeight);
  
      SetCapture(hWnd);
  
      while(1)
      {
          while (PeekMessageW( &msg, 0, WM_MOUSEFIRST, WM_MOUSELAST, PM_REMOVE ))
          {
              if( msg.message == WM_LBUTTONUP )
              {
                  ReleaseCapture();
                  return FALSE;
              }
              if( msg.message == WM_MOUSEMOVE )
              {
                  POINT tmp;
                  tmp.x = (short)LOWORD(msg.lParam);
                  tmp.y = (short)HIWORD(msg.lParam);
                  if( !PtInRect( &rect, tmp ))
                  {
                      ReleaseCapture();
                      return TRUE;
                  }
              }
          }
          WaitMessage();
      }
      return FALSE;
  }
  
  /******************************************************************************
   *		GetWindowModuleFileNameA (USER32.@)
   */
  UINT WINAPI GetWindowModuleFileNameA( HWND hwnd, LPSTR module, UINT size )
  {
      WND *win;
      HINSTANCE hinst;
  
      TRACE( "%p, %p, %u\n", hwnd, module, size );
  
      win = WIN_GetPtr( hwnd );
      if (!win || win == WND_OTHER_PROCESS || win == WND_DESKTOP)
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
      hinst = win->hInstance;
      WIN_ReleasePtr( win );
  
      return GetModuleFileNameA( hinst, module, size );
  }
  
  /******************************************************************************
   *		GetWindowModuleFileNameW (USER32.@)
   */
  UINT WINAPI GetWindowModuleFileNameW( HWND hwnd, LPWSTR module, UINT size )
  {
      WND *win;
      HINSTANCE hinst;
  
      TRACE( "%p, %p, %u\n", hwnd, module, size );
  
      win = WIN_GetPtr( hwnd );
      if (!win || win == WND_OTHER_PROCESS || win == WND_DESKTOP)
      {
          SetLastError( ERROR_INVALID_WINDOW_HANDLE );
          return 0;
      }
      hinst = win->hInstance;
      WIN_ReleasePtr( win );
  
      return GetModuleFileNameW( hinst, module, size );
  }
  
  /******************************************************************************
   *              GetWindowInfo (USER32.@)
   *
   * Note: tests show that Windows doesn't check cbSize of the structure.
   */
  BOOL WINAPI DECLSPEC_HOTPATCH GetWindowInfo( HWND hwnd, PWINDOWINFO pwi)
  {
      if (!pwi) return FALSE;
      if (!WIN_GetRectangles( hwnd, COORDS_SCREEN, &pwi->rcWindow, &pwi->rcClient )) return FALSE;
  
      pwi->dwStyle = GetWindowLongW(hwnd, GWL_STYLE);
      pwi->dwExStyle = GetWindowLongW(hwnd, GWL_EXSTYLE);
      pwi->dwWindowStatus = ((GetActiveWindow() == hwnd) ? WS_ACTIVECAPTION : 0);
  
      pwi->cxWindowBorders = pwi->rcClient.left - pwi->rcWindow.left;
      pwi->cyWindowBorders = pwi->rcWindow.bottom - pwi->rcClient.bottom;
  
      pwi->atomWindowType = GetClassLongW( hwnd, GCW_ATOM );
      pwi->wCreatorVersion = 0x0400;
  
      return TRUE;
  }
  
  /******************************************************************************
   *              SwitchDesktop (USER32.@)
   *
   * NOTES: Sets the current input or interactive desktop.
   */
  BOOL WINAPI SwitchDesktop( HDESK hDesktop)
  {
      FIXME("(hwnd %p) stub!\n", hDesktop);
      return TRUE;
  }
  
  
  /***********************************************************************
   *           __wine_set_pixel_format
   */
  BOOL CDECL __wine_set_pixel_format( HWND hwnd, int format )
  {
      WND *win = WIN_GetPtr( hwnd );
  
      if (!win || win == WND_DESKTOP || win == WND_OTHER_PROCESS)
      {
          WARN( "setting format %d on win %p not supported\n", format, hwnd );
          return FALSE;
      }
      win->pixel_format = format;
      WIN_ReleasePtr( win );
  
      update_window_state( hwnd );
      return TRUE;
  }
  
  
  /*****************************************************************************
   *              SetLayeredWindowAttributes (USER32.@)
   */
  BOOL WINAPI SetLayeredWindowAttributes( HWND hwnd, COLORREF key, BYTE alpha, DWORD flags )
  {
      BOOL ret;
  
      TRACE("(%p,%08x,%d,%x)\n", hwnd, key, alpha, flags);
  
      SERVER_START_REQ( set_window_layered_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          req->color_key = key;
          req->alpha = alpha;
          req->flags = flags;
          ret = !wine_server_call_err( req );
      }
      SERVER_END_REQ;
  
      if (ret)
      {
          USER_Driver->pSetLayeredWindowAttributes( hwnd, key, alpha, flags );
          update_window_state( hwnd );
      }
  
      return ret;
  }
  
  
  /*****************************************************************************
   *              GetLayeredWindowAttributes (USER32.@)
   */
  BOOL WINAPI GetLayeredWindowAttributes( HWND hwnd, COLORREF *key, BYTE *alpha, DWORD *flags )
  {
      BOOL ret;
  
      SERVER_START_REQ( get_window_layered_info )
      {
          req->handle = wine_server_user_handle( hwnd );
          if ((ret = !wine_server_call_err( req )))
          {
              if (key) *key = reply->color_key;
              if (alpha) *alpha = reply->alpha;
              if (flags) *flags = reply->flags;
          }
      }
      SERVER_END_REQ;
  
      return ret;
  }
  
  
  /*****************************************************************************
   *              UpdateLayeredWindowIndirect  (USER32.@)
   */
  BOOL WINAPI UpdateLayeredWindowIndirect( HWND hwnd, const UPDATELAYEREDWINDOWINFO *info )
  {
      DWORD flags = SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW;
      RECT window_rect, client_rect;
      SIZE offset;
  
      if (!info ||
          info->cbSize != sizeof(*info) ||
          info->dwFlags & ~(ULW_COLORKEY | ULW_ALPHA | ULW_OPAQUE | ULW_EX_NORESIZE) ||
          !(GetWindowLongW( hwnd, GWL_EXSTYLE ) & WS_EX_LAYERED) ||
          GetLayeredWindowAttributes( hwnd, NULL, NULL, NULL ))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
  
      WIN_GetRectangles( hwnd, COORDS_PARENT, &window_rect, &client_rect );
  
      if (info->pptDst)
      {
          offset.cx = info->pptDst->x - window_rect.left;
          offset.cy = info->pptDst->y - window_rect.top;
          OffsetRect( &client_rect, offset.cx, offset.cy );
          OffsetRect( &window_rect, offset.cx, offset.cy );
          flags &= ~SWP_NOMOVE;
      }
      if (info->psize)
      {
          offset.cx = info->psize->cx - (window_rect.right - window_rect.left);
          offset.cy = info->psize->cy - (window_rect.bottom - window_rect.top);
          if (info->psize->cx <= 0 || info->psize->cy <= 0)
          {
              SetLastError( ERROR_INVALID_PARAMETER );
              return FALSE;
          }
          if ((info->dwFlags & ULW_EX_NORESIZE) && (offset.cx || offset.cy))
          {
              SetLastError( ERROR_INCORRECT_SIZE );
              return FALSE;
          }
          client_rect.right  += offset.cx;
          client_rect.bottom += offset.cy;
          window_rect.right  += offset.cx;
          window_rect.bottom += offset.cy;
          flags &= ~SWP_NOSIZE;
      }
  
      TRACE( "window %p win %s client %s\n", hwnd,
             wine_dbgstr_rect(&window_rect), wine_dbgstr_rect(&client_rect) );
  
      if (!USER_Driver->pUpdateLayeredWindow( hwnd, info, &window_rect )) return FALSE;
  
      set_window_pos( hwnd, 0, flags, &window_rect, &client_rect, NULL );
      return TRUE;
  }
  
  
  /*****************************************************************************
   *              UpdateLayeredWindow (USER32.@)
   */
  BOOL WINAPI UpdateLayeredWindow( HWND hwnd, HDC hdcDst, POINT *pptDst, SIZE *psize,
                                   HDC hdcSrc, POINT *pptSrc, COLORREF crKey, BLENDFUNCTION *pblend,
                                   DWORD flags)
  {
      UPDATELAYEREDWINDOWINFO info;
  
      if (flags & ULW_EX_NORESIZE)  /* only valid for UpdateLayeredWindowIndirect */
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
      info.cbSize   = sizeof(info);
      info.hdcDst   = hdcDst;
      info.pptDst   = pptDst;
      info.psize    = psize;
      info.hdcSrc   = hdcSrc;
      info.pptSrc   = pptSrc;
      info.crKey    = crKey;
      info.pblend   = pblend;
      info.dwFlags  = flags;
      info.prcDirty = NULL;
      return UpdateLayeredWindowIndirect( hwnd, &info );
  }
  
  
  /******************************************************************************
   *                    GetProcessDefaultLayout [USER32.@]
   *
   * Gets the default layout for parentless windows.
   */
  BOOL WINAPI GetProcessDefaultLayout( DWORD *layout )
  {
      if (!layout)
      {
          SetLastError( ERROR_NOACCESS );
          return FALSE;
      }
      if (process_layout == ~0u)
      {
          static const WCHAR translationW[] = { '\\','V','a','r','F','i','l','e','I','n','f','o',
                                                '\\','T','r','a','n','s','l','a','t','i','o','n', 0 };
          static const WCHAR filedescW[] = { '\\','S','t','r','i','n','g','F','i','l','e','I','n','f','o',
                                             '\\','%','0','4','x','%','0','4','x',
                                             '\\','F','i','l','e','D','e','s','c','r','i','p','t','i','o','n',0 };
          WCHAR *str, buffer[MAX_PATH];
          DWORD i, len, version_layout = 0;
          DWORD user_lang = GetUserDefaultLangID();
          DWORD *languages;
          void *data = NULL;
  
          GetModuleFileNameW( 0, buffer, MAX_PATH );
          if (!(len = GetFileVersionInfoSizeW( buffer, NULL ))) goto done;
          if (!(data = HeapAlloc( GetProcessHeap(), 0, len ))) goto done;
          if (!GetFileVersionInfoW( buffer, 0, len, data )) goto done;
          if (!VerQueryValueW( data, translationW, (void **)&languages, &len ) || !len) goto done;
  
          len /= sizeof(DWORD);
          for (i = 0; i < len; i++) if (LOWORD(languages[i]) == user_lang) break;
          if (i == len)  /* try neutral language */
              for (i = 0; i < len; i++)
                  if (LOWORD(languages[i]) == MAKELANGID( PRIMARYLANGID(user_lang), SUBLANG_NEUTRAL )) break;
          if (i == len) i = 0;  /* default to the first one */
  
          sprintfW( buffer, filedescW, LOWORD(languages[i]), HIWORD(languages[i]) );
          if (!VerQueryValueW( data, buffer, (void **)&str, &len )) goto done;
          TRACE( "found description %s\n", debugstr_w( str ));
          if (str[0] == 0x200e && str[1] == 0x200e) version_layout = LAYOUT_RTL;
  
      done:
          HeapFree( GetProcessHeap(), 0, data );
          process_layout = version_layout;
      }
      *layout = process_layout;
      return TRUE;
  }
  
  
  /******************************************************************************
   *                    SetProcessDefaultLayout [USER32.@]
   *
   * Sets the default layout for parentless windows.
   */
  BOOL WINAPI SetProcessDefaultLayout( DWORD layout )
  {
      process_layout = layout;
      return TRUE;
  }
  
  
  /* 64bit versions */
  
  #ifdef GetWindowLongPtrW
  #undef GetWindowLongPtrW
  #endif
  
  #ifdef GetWindowLongPtrA
  #undef GetWindowLongPtrA
  #endif
  
  #ifdef SetWindowLongPtrW
  #undef SetWindowLongPtrW
  #endif
  
  #ifdef SetWindowLongPtrA
  #undef SetWindowLongPtrA
  #endif
  
  /*****************************************************************************
   *              GetWindowLongPtrW (USER32.@)
   */
  LONG_PTR WINAPI GetWindowLongPtrW( HWND hwnd, INT offset )
  {
      return WIN_GetWindowLong( hwnd, offset, sizeof(LONG_PTR), TRUE );
  }
  
  /*****************************************************************************
   *              GetWindowLongPtrA (USER32.@)
   */
  LONG_PTR WINAPI GetWindowLongPtrA( HWND hwnd, INT offset )
  {
      return WIN_GetWindowLong( hwnd, offset, sizeof(LONG_PTR), FALSE );
  }
  
  /*****************************************************************************
   *              SetWindowLongPtrW (USER32.@)
   */
  LONG_PTR WINAPI SetWindowLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
  {
      return WIN_SetWindowLong( hwnd, offset, sizeof(LONG_PTR), newval, TRUE );
  }
  
  /*****************************************************************************
   *              SetWindowLongPtrA (USER32.@)
   */
  LONG_PTR WINAPI SetWindowLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
  {
      return WIN_SetWindowLong( hwnd, offset, sizeof(LONG_PTR), newval, FALSE );
  }
  
  /*****************************************************************************
   *              RegisterTouchWindow (USER32.@)
   */
  BOOL WINAPI RegisterTouchWindow(HWND hwnd, ULONG flags)
  {
      FIXME("(%p %08x): stub\n", hwnd, flags);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /*****************************************************************************
   *              UnregisterTouchWindow (USER32.@)
   */
  BOOL WINAPI UnregisterTouchWindow(HWND hwnd)
  {
      FIXME("(%p): stub\n", hwnd);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /*****************************************************************************
   *              CloseTouchInputHandle (USER32.@)
   */
  BOOL WINAPI CloseTouchInputHandle(HTOUCHINPUT handle)
  {
      FIXME("(%p): stub\n", handle);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /*****************************************************************************
   *              GetTouchInputInfo (USER32.@)
   */
  BOOL WINAPI GetTouchInputInfo(HTOUCHINPUT handle, UINT count, TOUCHINPUT *ptr, int size)
  {
      FIXME("(%p %u %p %u): stub\n", handle, count, ptr, size);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /*****************************************************************************
   *              GetGestureInfo (USER32.@)
   */
  BOOL WINAPI GetGestureInfo(HGESTUREINFO handle, PGESTUREINFO ptr)
  {
      FIXME("(%p %p): stub\n", handle, ptr);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /*****************************************************************************
   *              GetWindowDisplayAffinity (USER32.@)
   */
  BOOL WINAPI GetWindowDisplayAffinity(HWND hwnd, DWORD *affinity)
  {
      FIXME("(%p, %p): stub\n", hwnd, affinity);
  
      if (!hwnd || !affinity)
      {
          SetLastError(hwnd ? ERROR_NOACCESS : ERROR_INVALID_WINDOW_HANDLE);
          return FALSE;
      }
  
      *affinity = WDA_NONE;
      return TRUE;
  }
  
  /*****************************************************************************
   *              SetWindowDisplayAffinity (USER32.@)
   */
  BOOL WINAPI SetWindowDisplayAffinity(HWND hwnd, DWORD affinity)
  {
      FIXME("(%p, %u): stub\n", hwnd, affinity);
  
      if (!hwnd)
      {
          SetLastError(ERROR_INVALID_WINDOW_HANDLE);
          return FALSE;
      }
  
      SetLastError(ERROR_NOT_ENOUGH_MEMORY);
      return FALSE;
  }
  
  /**********************************************************************
   *              SetWindowCompositionAttribute (USER32.@)
   */
  BOOL WINAPI SetWindowCompositionAttribute(HWND hwnd, void *data)
  {
      FIXME("(%p, %p): stub\n", hwnd, data);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  