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 "wine/winbase16.h"
  #include "wine/winuser16.h"
  #include "wownt32.h"
  #include "wine/server.h"
  #include "wine/unicode.h"
  #include "win.h"
  #include "user_private.h"
  #include "controls.h"
  #include "winerror.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)
  
  /**********************************************************************/
  
  /* 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];
  
  /***********************************************************************
   *           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;
  
      /* if 16-bit instance, map to module handle */
      if (instance && !HIWORD(instance))
          instance = HINSTANCE_32(GetExePtr(HINSTANCE_16(instance)));
  
      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 );
          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;
              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 );
      user_handles[index] = win;
      win->hwndSelf   = handle;
      win->parent     = full_parent;
      win->owner      = full_owner;
      win->class      = class;
      win->winproc    = get_class_winproc( class );
      win->dwMagic    = WND_MAGIC;
      win->cbWndExtra = extra_bytes;
      if (WINPROC_IsUnicode( win->winproc, unicode )) win->flags |= WIN_ISUNICODE;
      return win;
  }
  
  
  /***********************************************************************
   *           free_window_handle
   *
   * Free a window handle.
   */
  static WND *free_window_handle( HWND hwnd )
  {
      WND *ptr;
      WORD index = USER_HANDLE_TO_INDEX(hwnd);
  
      if (index >= NB_USER_HANDLES) return NULL;
      USER_Lock();
      if ((ptr = user_handles[index]))
      {
          SERVER_START_REQ( destroy_window )
          {
              req->handle = wine_server_user_handle( hwnd );
              if (!wine_server_call_err( req ))
              {
                  user_handles[index] = NULL;
                  ptr->dwMagic = 0;
              }
              else
                  ptr = NULL;
          }
          SERVER_END_REQ;
      }
      USER_Unlock();
      HeapFree( GetProcessHeap(), 0, ptr );
      return 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 = 0;
  
      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 );
      }
  }
  
  
  /*******************************************************************
   *		get_server_window_text
   *
   * Retrieve the window text from the server.
   */
  static void get_server_window_text( HWND hwnd, LPWSTR text, INT count )
  {
      size_t len = 0;
  
      SERVER_START_REQ( get_window_text )
      {
          req->handle = wine_server_user_handle( hwnd );
          wine_server_set_reply( req, text, (count - 1) * sizeof(WCHAR) );
          if (!wine_server_call_err( req )) len = wine_server_reply_size(reply);
      }
      SERVER_END_REQ;
      text[len / sizeof(WCHAR)] = 0;
  }
  
  
  /*******************************************************************
   *           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;
  }
  
  
  /***********************************************************************
   *           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;
      WORD index = USER_HANDLE_TO_INDEX(hwnd);
  
      if (index >= NB_USER_HANDLES) return NULL;
  
      USER_Lock();
      if ((ptr = user_handles[index]))
      {
          if (ptr->dwMagic == WND_MAGIC &&
              (hwnd == ptr->hwndSelf || !HIWORD(hwnd) || HIWORD(hwnd) == 0xffff))
              return ptr;
          ptr = NULL;
      }
      else if (is_desktop_window( hwnd )) ptr = WND_DESKTOP;
      else ptr = WND_OTHER_PROCESS;
      USER_Unlock();
      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->hwndSelf;
      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->hwndSelf;
      WIN_ReleasePtr( ptr );
      return ret;
  }
  
  
  /***********************************************************************
   *           WIN_Handle32
   *
   * Convert a 16-bit window handle to a full 32-bit handle.
   */
  HWND WIN_Handle32( HWND16 hwnd16 )
  {
      WND *ptr;
      HWND hwnd = (HWND)(ULONG_PTR)hwnd16;
  
      if (hwnd16 <= 1 || hwnd16 == 0xffff) return hwnd;
      /* do sign extension for -2 and -3 */
      if (hwnd16 >= (HWND16)-3) return (HWND)(LONG_PTR)(INT16)hwnd16;
  
      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->hwndSelf;
          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.
   */
  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;
      STYLESTRUCT style;
      WND *win = WIN_GetPtr( hwnd );
  
      if (!win || win == WND_DESKTOP) return 0;
      if (win == WND_OTHER_PROCESS)
      {
          if (IsWindow(hwnd))
              ERR( "cannot set style %x/%x on other process window %p\n",
                   set_bits, clear_bits, hwnd );
          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;
      WIN_ReleasePtr( win );
      if (ok)
      {
          USER_Driver->pSetWindowStyle( hwnd, GWL_STYLE, &style );
          if ((style.styleOld ^ style.styleNew) & WS_VISIBLE) invalidate_dce( hwnd, NULL );
      }
      return style.styleOld;
  }
  
  
  /***********************************************************************
   *           WIN_GetRectangles
   *
   * Get the window and client rectangles.
   */
  BOOL WIN_GetRectangles( HWND hwnd, RECT *rectWindow, RECT *rectClient )
  {
      WND *win = WIN_GetPtr( hwnd );
      BOOL ret = TRUE;
  
      if (!win) 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;
          }
          else
          {
              rect.right  = GetSystemMetrics(SM_CXSCREEN);
              rect.bottom = GetSystemMetrics(SM_CYSCREEN);
          }
          if (rectWindow) *rectWindow = rect;
          if (rectClient) *rectClient = rect;
      }
      else if (win == WND_OTHER_PROCESS)
      {
          SERVER_START_REQ( get_window_rectangles )
          {
              req->handle = wine_server_user_handle( hwnd );
              if ((ret = !wine_server_call( 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;
      }
      else
      {
          if (rectWindow) *rectWindow = win->rectWindow;
          if (rectClient) *rectClient = win->rectClient;
          WIN_ReleasePtr( win );
      }
      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;
      HWND icon_title;
  
      TRACE("%p\n", 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 SendMessageW( 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;
      icon_title = wndPtr->icon_title;
      WIN_ReleasePtr( wndPtr );
  
      if (icon_title) DestroyWindow( icon_title );
      if (menu) DestroyMenu( menu );
      if (sys_menu) DestroyMenu( sys_menu );
  
      USER_Driver->pDestroyWindow( hwnd );
  
      free_window_handle( hwnd );
      return 0;
  }
  
  
  /***********************************************************************
   *		destroy_thread_window
   *
   * Destroy a window upon exit of its thread.
   */
  static void destroy_thread_window( HWND hwnd )
  {
      WND *wndPtr;
      HWND *list;
      HMENU menu = 0, sys_menu = 0;
      WORD index;
  
      /* free child windows */
  
      if ((list = WIN_ListChildren( hwnd )))
      {
          int i;
          for (i = 0; list[i]; i++)
          {
              if (WIN_IsCurrentThread( list[i] )) destroy_thread_window( list[i] );
              else SendMessageW( list[i], WM_WINE_DESTROYWINDOW, 0, 0 );
          }
          HeapFree( GetProcessHeap(), 0, list );
      }
  
      /* destroy the client-side storage */
  
      index = USER_HANDLE_TO_INDEX(hwnd);
      if (index >= NB_USER_HANDLES) return;
      USER_Lock();
      if ((wndPtr = user_handles[index]))
      {
          if ((wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) != WS_CHILD) menu = (HMENU)wndPtr->wIDmenu;
          sys_menu = wndPtr->hSysMenu;
          free_dce( wndPtr->dce, hwnd );
          user_handles[index] = NULL;
          wndPtr->dwMagic = 0;
      }
      USER_Unlock();
  
      HeapFree( GetProcessHeap(), 0, wndPtr );
      if (menu) DestroyMenu( menu );
      if (sys_menu) DestroyMenu( sys_menu );
  }
  
  
  /***********************************************************************
   *		destroy_thread_child_windows
   *
   * Destroy child windows upon exit of its thread.
   */
  static void destroy_thread_child_windows( HWND hwnd )
  {
      HWND *list;
      int i;
  
      if (WIN_IsCurrentThread( hwnd ))
      {
          destroy_thread_window( hwnd );
      }
      else if ((list = WIN_ListChildren( hwnd )))
      {
          for (i = 0; list[i]; i++) destroy_thread_child_windows( list[i] );
          HeapFree( GetProcessHeap(), 0, list );
      }
  }
  
  
  /***********************************************************************
   *           WIN_DestroyThreadWindows
   *
   * Destroy all children of 'wnd' owned by the current thread.
   */
  void WIN_DestroyThreadWindows( HWND hwnd )
  {
      HWND *list;
      int i;
  
      if (!(list = WIN_ListChildren( hwnd ))) return;
  
      /* reset owners of top-level windows */
      for (i = 0; list[i]; i++)
      {
          if (!WIN_IsCurrentThread( list[i] ))
          {
              HWND owner = GetWindow( list[i], GW_OWNER );
              if (owner && WIN_IsCurrentThread( owner )) WIN_SetOwner( list[i], 0 );
          }
      }
  
      for (i = 0; list[i]; i++) destroy_thread_child_windows( list[i] );
      HeapFree( GetProcessHeap(), 0, list );
  }
  
  
  /***********************************************************************
   *           WIN_FixCoordinates
   *
   * Fix the coordinates - Helper for WIN_CreateWindowEx.
   * returns default show mode in sw.
   */
  static void WIN_FixCoordinates( CREATESTRUCTA *cs, INT *sw)
  {
  #define IS_DEFAULT(x)  ((x) == CW_USEDEFAULT || (x) == CW_USEDEFAULT16)
      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 \
      (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(" %08lx", 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");
  
  #define DUMPED_EX_STYLES \
      (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)
  
      if(exstyle & ~DUMPED_EX_STYLES) TRACE(" %08lx", exstyle & ~DUMPED_EX_STYLES);
      TRACE("\n");
  #undef DUMPED_EX_STYLES
  }
  
  
  /***********************************************************************
   *           WIN_CreateWindowEx
   *
   * Implementation of CreateWindowEx().
   */
  static HWND WIN_CreateWindowEx( CREATESTRUCTA *cs, LPCWSTR className, UINT flags )
  {
      INT cx, cy, style, sw = SW_SHOW;
      LRESULT result;
      RECT rect;
      WND *wndPtr;
      HWND hwnd, parent, owner, top_child = 0;
      BOOL unicode = (flags & WIN_ISUNICODE) != 0;
      MDICREATESTRUCTA mdi_cs;
      CBT_CREATEWNDA cbtc;
      CREATESTRUCTA cbcs;
  
      TRACE("%s %s ex=%08x style=%08x %d,%d %dx%d parent=%p menu=%p inst=%p params=%p\n",
            unicode ? debugstr_w((LPCWSTR)cs->lpszName) : debugstr_a(cs->lpszName),
            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)
      {
          UINT flags = 0;
  
          wndPtr = WIN_GetPtr(cs->hwndParent);
          if (wndPtr && wndPtr != WND_OTHER_PROCESS && wndPtr != WND_DESKTOP)
          {
              flags = wndPtr->flags;
              WIN_ReleasePtr(wndPtr);
          }
  
          if (!(flags & 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);
                  SendMessageW( top_child, WM_SETREDRAW, FALSE, 0 );
                  ShowWindow( top_child, SW_SHOWNORMAL );
                  SendMessageW( top_child, WM_SETREDRAW, TRUE, 0 );
              }
          }
      }
  
      /* 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
      {
          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 )))
              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, cs->hInstance, unicode )))
          return 0;
      hwnd = wndPtr->hwndSelf;
  
      /* 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->hSysMenu       = 0;
      wndPtr->flags         |= (flags & WIN_ISWIN32);
  
      wndPtr->min_pos.x = wndPtr->min_pos.y = -1;
      wndPtr->max_pos.x = wndPtr->max_pos.y = -1;
  
      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 appears to be enforced based on the other styles, so
       * why does the user get to set it?
       */
  
      if ((wndPtr->dwExStyle & WS_EX_DLGMODALFRAME) ||
            (wndPtr->dwStyle & (WS_DLGFRAME | WS_THICKFRAME)))
          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
          {
              LPCSTR menuName = (LPCSTR)GetClassLongPtrA( hwnd, GCLP_MENUNAME );
              if (menuName)
              {
                  if (!cs->hInstance || HIWORD(cs->hInstance))
                      cs->hMenu = LoadMenuA(cs->hInstance,menuName);
                  else
                      cs->hMenu = HMENU_32(LoadMenu16(HINSTANCE_16(cs->hInstance),menuName));
  
                  if (cs->hMenu) MENU_SetMenu( hwnd, cs->hMenu );
              }
          }
      }
      else SetWindowLongPtrW( hwnd, GWLP_ID, (ULONG_PTR)cs->hMenu );
  
      /* 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 = wndPtr->dwStyle;
      cbtc.lpcs = &cbcs;
      cbtc.hwndInsertAfter = HWND_TOP;
      WIN_ReleasePtr( wndPtr );
      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)))
      {
          POINT maxSize, maxPos, minTrack, maxTrack;
          WINPOS_GetMinMaxInfo( hwnd, &maxSize, &maxPos, &minTrack, &maxTrack);
          if (maxTrack.x < cx) cx = maxTrack.x;
          if (maxTrack.y < cy) cy = maxTrack.y;
          if (minTrack.x > cx) cx = minTrack.x;
          if (minTrack.y > cy) cy = minTrack.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 + cx < cs->x) rect.right = 0x7fffffff;
      if (cs->y + cy < cs->y) 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\n", hwnd, cs->x, cs->y, cx, cy );
      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;
      }
  
      /* send WM_NCCALCSIZE */
  
      if ((wndPtr = WIN_GetPtr(hwnd)))
      {
          /* yes, even if the CBT hook was called with HWND_TOP */
          POINT pt;
          HWND insert_after = (wndPtr->dwStyle & WS_CHILD) ? HWND_BOTTOM : HWND_TOP;
          RECT window_rect = wndPtr->rectWindow;
          RECT client_rect = window_rect;
          WIN_ReleasePtr( wndPtr );
  
          /* the rectangle is in screen coords for WM_NCCALCSIZE when wparam is FALSE */
          pt.x = pt.y = 0;
          MapWindowPoints( parent, 0, &pt, 1 );
          OffsetRect( &client_rect, pt.x, pt.y );
          SendMessageW( hwnd, WM_NCCALCSIZE, FALSE, (LPARAM)&client_rect );
          OffsetRect( &client_rect, -pt.x, -pt.y );
          set_window_pos( hwnd, insert_after, SWP_NOACTIVATE, &window_rect, &client_rect, NULL );
      }
      else return 0;
  
      /* 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 (!(wndPtr = WIN_GetPtr( hwnd )) ||
            wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return 0;
      if (!(wndPtr->flags & WIN_NEED_SIZE))
      {
          rect = wndPtr->rectClient;
          WIN_ReleasePtr( wndPtr );
          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 ) );
      }
      else WIN_ReleasePtr( wndPtr );
  
      /* 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 )) return 0;
  
      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);
      return hwnd;
  
  failed:
      WIN_DestroyWindow( hwnd );
      return 0;
  }
  
  
  /***********************************************************************
   *		CreateWindow (USER.41)
   */
  HWND16 WINAPI CreateWindow16( LPCSTR className, LPCSTR windowName,
                                DWORD style, INT16 x, INT16 y, INT16 width,
                                INT16 height, HWND16 parent, HMENU16 menu,
                                HINSTANCE16 instance, LPVOID data )
  {
      return CreateWindowEx16( 0, className, windowName, style,
                               x, y, width, height, parent, menu, instance, data );
  }
  
  
  /***********************************************************************
   *		CreateWindowEx (USER.452)
   */
  HWND16 WINAPI CreateWindowEx16( DWORD exStyle, LPCSTR className,
                                  LPCSTR windowName, DWORD style, INT16 x,
                                  INT16 y, INT16 width, INT16 height,
                                  HWND16 parent, HMENU16 menu,
                                  HINSTANCE16 instance, LPVOID data )
  {
      CREATESTRUCTA cs;
      char buffer[256];
  
      /* Fix the coordinates */
  
      cs.x  = (x == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)x;
      cs.y  = (y == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)y;
      cs.cx = (width == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)width;
      cs.cy = (height == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)height;
  
      /* Create the window */
  
      cs.lpCreateParams = data;
      cs.hInstance      = HINSTANCE_32(instance);
      cs.hMenu          = HMENU_32(menu);
      cs.hwndParent     = WIN_Handle32( parent );
      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, sizeof(bufferW)/sizeof(WCHAR) ))
              return 0;
          return HWND_16( WIN_CreateWindowEx( &cs, bufferW, 0 ));
      }
      else
      {
          if (!GlobalGetAtomNameA( LOWORD(className), buffer, sizeof(buffer) ))
          {
              ERR( "bad atom %x\n", LOWORD(className));
              return 0;
          }
          cs.lpszClass = buffer;
          return HWND_16( WIN_CreateWindowEx( &cs, (LPCWSTR)className, 0 ));
      }
  }
  
  
  /***********************************************************************
   *		CreateWindowExA (USER32.@)
   */
  HWND WINAPI 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, sizeof(bufferW)/sizeof(WCHAR) ))
              return 0;
          return WIN_CreateWindowEx( &cs, bufferW, WIN_ISWIN32 );
      }
      return WIN_CreateWindowEx( &cs, (LPCWSTR)className, WIN_ISWIN32 );
  }
  
  
  /***********************************************************************
   *		CreateWindowExW (USER32.@)
   */
  HWND WINAPI 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;
  
      /* Note: we rely on the fact that CREATESTRUCTA and */
      /* CREATESTRUCTW have the same layout. */
      return WIN_CreateWindowEx( (CREATESTRUCTA *)&cs, className, WIN_ISWIN32 | WIN_ISUNICODE );
  }
  
  
  /***********************************************************************
   *           WIN_SendDestroyMsg
   */
  static void WIN_SendDestroyMsg( HWND hwnd )
  {
      GUITHREADINFO info;
  
      if (GetGUIThreadInfo( GetCurrentThreadId(), &info ))
      {
          if (hwnd == info.hwndCaret) DestroyCaret();
          if (hwnd == info.hwndActive) WINPOS_ActivateOtherWindow( 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, got_one = 0;
              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 = 1;
                          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;
  
      if (GetClipboardOwner() == hwnd)
          CLIPBOARD_ReleaseOwner();
  
        /* 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 = NULL;
      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 (GetWindowTextW( list[i], buffer, len + 1 ) && !strcmpiW( buffer, title )) 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, sizeof(classW)/sizeof(WCHAR) ))
              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)
      {
          USEROBJECTFLAGS flags;
          if (!GetUserObjectInformationW( GetProcessWindowStation(), UOI_FLAGS, &flags,
                                          sizeof(flags), NULL ) || (flags.dwFlags & WSF_VISIBLE))
          {
              static const WCHAR command_line[] = {'\\','e','x','p','l','o','r','e','r','.','e','x','e',' ','/','d','e','s','k','t','o','p',0};
              STARTUPINFOW si;
              PROCESS_INFORMATION pi;
              WCHAR systemdir[MAX_PATH];
              WCHAR cmdline[MAX_PATH + sizeof(command_line)/sizeof(WCHAR)];
  
              memset( &si, 0, sizeof(si) );
              si.cb = sizeof(si);
              si.dwFlags = STARTF_USESTDHANDLES;
              si.hStdInput  = 0;
              si.hStdOutput = 0;
              si.hStdError  = GetStdHandle( STD_ERROR_HANDLE );
  
              GetSystemDirectoryW( systemdir, MAX_PATH );
              lstrcpyW( cmdline, systemdir );
              lstrcatW( cmdline, command_line );
              if (CreateProcessW( NULL, cmdline, NULL, NULL, FALSE, DETACHED_PROCESS,
                                  NULL, systemdir, &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() );
          }
          else TRACE( "not starting explorer since winstation is not visible\n" );
  
          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;
      HWND full_handle;
  
      if (is_broadcast(hwnd))
      {
          SetLastError( ERROR_INVALID_PARAMETER );
          return FALSE;
      }
  
      if (!(full_handle = WIN_IsCurrentThread( hwnd )))
          return SendMessageW( hwnd, WM_WINE_ENABLEWINDOW, enable, 0 );
  
      hwnd = full_handle;
  
      TRACE("( %p, %d )\n", hwnd, enable);
  
      retvalue = !IsWindowEnabled( hwnd );
  
      if (enable && retvalue)
      {
          WIN_SetStyle( hwnd, 0, WS_DISABLED );
          SendMessageW( hwnd, WM_ENABLE, TRUE, 0 );
      }
      else if (!enable && !retvalue)
      {
          HWND capture_wnd;
  
          SendMessageW( hwnd, WM_CANCELMODE, 0, 0);
  
          WIN_SetStyle( hwnd, WS_DISABLED, 0 );
  
          if (hwnd == GetFocus())
              SetFocus( 0 );  /* A disabled window can't have the focus */
  
          capture_wnd = GetCapture();
          if (hwnd == capture_wnd || IsChild(hwnd, capture_wnd))
              ReleaseCapture();  /* A disabled window can't capture the mouse */
  
          SendMessageW( hwnd, WM_ENABLE, FALSE, 0 );
      }
      return retvalue;
  }
  
  
  /***********************************************************************
   *		IsWindowEnabled (USER32.@)
   */
  BOOL WINAPI IsWindowEnabled(HWND hWnd)
  {
      return !(GetWindowLongW( hWnd, GWL_STYLE ) & 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;
  }
  
  
  /**********************************************************************
   *	     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_OTHER_PROCESS || wndPtr == WND_DESKTOP)
      {
          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->flags & WIN_ISDIALOG))
              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 == EDIT_winproc_handle && (!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;
      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:
      case GWL_EXSTYLE:
          style.styleOld =
              offset == GWL_STYLE ? wndPtr->dwStyle : wndPtr->dwExStyle;
          style.styleNew = newval;
          WIN_ReleasePtr( wndPtr );
          SendMessageW( hwnd, WM_STYLECHANGING, offset, (LPARAM)&style );
          if (!(wndPtr = WIN_GetPtr( hwnd )) || wndPtr == WND_OTHER_PROCESS) return 0;
          newval = style.styleNew;
          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 );
          if (unicode) proc = WINPROC_AllocProc( NULL, (WNDPROC)newval );
          else proc = WINPROC_AllocProc( (WNDPROC)newval, NULL );
          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->flags & WIN_ISDIALOG))
          {
              WNDPROC *ptr = (WNDPROC *)((char *)wndPtr->wExtra + DWLP_DLGPROC);
              retval = (ULONG_PTR)WINPROC_GetProc( *ptr, unicode );
              if (unicode) *ptr = WINPROC_AllocProc( NULL, (WNDPROC)newval );
              else *ptr = WINPROC_AllocProc( (WNDPROC)newval, NULL );
              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;
              /* WS_EX_TOPMOST can only be changed through SetWindowPos */
              newval = (newval & ~WS_EX_TOPMOST) | (wndPtr->dwExStyle & WS_EX_TOPMOST);
              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;
      WIN_ReleasePtr( wndPtr );
  
      if (!ok) return 0;
  
      if (offset == GWL_STYLE || offset == GWL_EXSTYLE)
      {
          USER_Driver->pSetWindowStyle( hwnd, offset, &style );
          SendMessageW( hwnd, WM_STYLECHANGED, offset, (LPARAM)&style );
      }
  
      return retval;
  }
  
  
  /**********************************************************************
   *		GetWindowLong (USER.135)
   */
  LONG WINAPI GetWindowLong16( HWND16 hwnd, INT16 offset )
  {
      WND *wndPtr;
      LONG_PTR retvalue;
      BOOL is_winproc = (offset == GWLP_WNDPROC);
  
      if (offset >= 0)
      {
          if (!(wndPtr = WIN_GetPtr( WIN_Handle32(hwnd) )))
          {
              SetLastError( ERROR_INVALID_WINDOW_HANDLE );
              return 0;
          }
          if (wndPtr != WND_OTHER_PROCESS && wndPtr != WND_DESKTOP)
          {
              if (offset > (int)(wndPtr->cbWndExtra - sizeof(LONG)))
              {
                  /*
                   * Some programs try to access last element from 16 bit
                   * code using illegal offset value. Hopefully this is
                   * what those programs really expect.
                   */
                  if (wndPtr->cbWndExtra >= 4 && offset == wndPtr->cbWndExtra - sizeof(WORD))
                  {
                      INT offset2 = wndPtr->cbWndExtra - sizeof(LONG);
                      ERR( "- replaced invalid offset %d with %d\n", offset, offset2 );
                      offset = offset2;
                  }
                  else
                  {
                      WARN("Invalid offset %d\n", offset );
                      WIN_ReleasePtr( wndPtr );
                      SetLastError( ERROR_INVALID_INDEX );
                      return 0;
                  }
              }
              is_winproc = ((offset == DWLP_DLGPROC) && (wndPtr->flags & WIN_ISDIALOG));
              WIN_ReleasePtr( wndPtr );
          }
      }
      retvalue = GetWindowLongA( WIN_Handle32(hwnd), offset );
      if (is_winproc) retvalue = (LONG_PTR)WINPROC_GetProc16( (WNDPROC)retvalue, FALSE );
      return retvalue;
  }
  
  
  /**********************************************************************
   *		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 )
  {
      return WIN_GetWindowLong( hwnd, offset, sizeof(LONG), FALSE );
  }
  
  
  /**********************************************************************
   *		GetWindowLongW (USER32.@)
   */
  LONG WINAPI GetWindowLongW( HWND hwnd, INT offset )
  {
      return WIN_GetWindowLong( hwnd, offset, sizeof(LONG), TRUE );
  }
  
  
  /**********************************************************************
   *		SetWindowLong (USER.136)
   */
  LONG WINAPI SetWindowLong16( HWND16 hwnd, INT16 offset, LONG newval )
  {
      WND *wndPtr;
      BOOL is_winproc = (offset == GWLP_WNDPROC);
  
      if (offset == DWLP_DLGPROC)
      {
          if (!(wndPtr = WIN_GetPtr( WIN_Handle32(hwnd) )))
          {
              SetLastError( ERROR_INVALID_WINDOW_HANDLE );
              return 0;
          }
          if (wndPtr != WND_OTHER_PROCESS && wndPtr != WND_DESKTOP)
          {
              is_winproc = ((wndPtr->cbWndExtra - sizeof(LONG_PTR) >= DWLP_DLGPROC) &&
                            (wndPtr->flags & WIN_ISDIALOG));
              WIN_ReleasePtr( wndPtr );
          }
      }
  
      if (is_winproc)
      {
          WNDPROC new_proc = WINPROC_AllocProc16( (WNDPROC16)newval );
          WNDPROC old_proc = (WNDPROC)SetWindowLongPtrA( WIN_Handle32(hwnd), offset, (LONG_PTR)new_proc );
          return (LONG)WINPROC_GetProc16( old_proc, FALSE );
      }
      else return SetWindowLongA( WIN_Handle32(hwnd), offset, newval );
  }
  
  
  /**********************************************************************
   *		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 SetWindowLongA( HWND hwnd, INT offset, LONG newval )
  {
      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 window.  is 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 pplication 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 SetWindowLongW(
      HWND hwnd,  /* [in] window to alter */
      INT offset, /* [in] offset, in bytes, of location to alter */
      LONG newval /* [in] new value of location */
  ) {
      return WIN_SetWindowLong( hwnd, offset, sizeof(LONG), newval, TRUE );
  }
  
  
  /*******************************************************************
   *		GetWindowTextA (USER32.@)
   */
  INT WINAPI GetWindowTextA( HWND hwnd, LPSTR lpString, INT nMaxCount )
  {
      WCHAR *buffer;
  
      if (!lpString) return 0;
  
      if (WIN_IsCurrentProcess( hwnd ))
          return (INT)SendMessageA( hwnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString );
  
      /* when window belongs to other process, don't send a message */
      if (nMaxCount <= 0) return 0;
      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) return 0;
  
      if (WIN_IsCurrentProcess( hwnd ))
          return (INT)SendMessageW( hwnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString );
  
      /* when window belongs to other process, don't send a message */
      if (nMaxCount <= 0) return 0;
      get_server_window_text( hwnd, lpString, nMaxCount );
      return strlenW(lpString);
  }
  
  
  /*******************************************************************
   *		SetWindowTextA (USER32.@)
   *		SetWindowText  (USER32.@)
   */
  BOOL WINAPI 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 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 )
  {
      return SendMessageA( hwnd, WM_GETTEXTLENGTH, 0, 0 );
  }
  
  /*******************************************************************
   *		GetWindowTextLengthW (USER32.@)
   */
  INT WINAPI GetWindowTextLengthW( HWND hwnd )
  {
      return SendMessageW( hwnd, WM_GETTEXTLENGTH, 0, 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 )
  {
      HWND full_handle;
      HWND old_parent = 0;
      BOOL was_visible;
      WND *wndPtr;
      BOOL ret;
  
      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 );
  
      /* 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;
  
      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 );
          }
  
      }
      SERVER_END_REQ;
      WIN_ReleasePtr( wndPtr );
      if (!ret) return 0;
  
      USER_Driver->pSetParent( full_handle, parent, old_parent );
  
      /* SetParent additionally needs to make hwnd the topmost window
         in the x-order and send the expected WM_WINDOWPOSCHANGING and
         WM_WINDOWPOSCHANGED notification messages.
      */
      SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0,
                    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | (was_visible ? SWP_SHOWWINDOW : 0) );
      /* FIXME: a WM_MOVE is also generated (in the DefWindowProc handler
       * for WM_WINDOWPOSCHANGED) in Windows, should probably remove SWP_NOMOVE */
  
      return old_parent;
  }
  
  
  /*******************************************************************
   *		IsChild (USER32.@)
   */
  BOOL WINAPI IsChild( HWND parent, HWND child )
  {
      HWND *list = list_window_parents( child );
      int i;
      BOOL ret;
  
      if (!list) return FALSE;
      parent = WIN_GetFullHandle( parent );
      for (i = 0; list[i]; i++) if (list[i] == parent) break;
      ret = list[i] && list[i+1];
      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;
      WND *pWnd;
      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 (!(pWnd = WIN_GetPtr( win_array[count] ))) continue;
          if (pWnd == WND_OTHER_PROCESS) continue;
          if (fShow)
          {
              if (pWnd->flags & WIN_NEEDS_SHOW_OWNEDPOPUP)
              {
                  WIN_ReleasePtr( pWnd );
                  /* 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);
                  continue;
              }
          }
          else
          {
              if (pWnd->dwStyle & WS_VISIBLE)
              {
                  WIN_ReleasePtr( pWnd );
                  /* 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);
                  continue;
              }
          }
          WIN_ReleasePtr( pWnd );
      }
      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;
  
      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 (!func( list[i], lParam )) break;
      HeapFree( GetProcessHeap(), 0, list );
      return TRUE;
  }
  
  
  /***********************************************************************
   *              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;
  }
  
  
  /**********************************************************************
   *           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 = 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 (USER.52)
   */
  BOOL16 WINAPI AnyPopup16(void)
  {
      return AnyPopup();
  }
  
  
  /*******************************************************************
   *		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 )
  {
      WND *wndPtr;
  
      TRACE("%p\n", hWnd);
  
      if (IsIconic( hWnd ))
      {
          RedrawWindow( hWnd, 0, 0, RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_FRAME );
  
          wndPtr = WIN_GetPtr(hWnd);
          if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return FALSE;
          if (bInvert && !(wndPtr->flags & WIN_NCACTIVATED))
          {
              wndPtr->flags |= WIN_NCACTIVATED;
          }
          else
          {
              wndPtr->flags &= ~WIN_NCACTIVATED;
          }
          WIN_ReleasePtr( wndPtr );
          return TRUE;
      }
      else
      {
          WPARAM wparam;
  
          wndPtr = WIN_GetPtr(hWnd);
          if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return FALSE;
          hWnd = wndPtr->hwndSelf;  /* make it a full handle */
  
          if (bInvert) wparam = !(wndPtr->flags & WIN_NCACTIVATED);
          else wparam = (hWnd == GetForegroundWindow());
  
          WIN_ReleasePtr( wndPtr );
          SendMessageW( hWnd, WM_NCACTIVATE, wparam, 0 );
          return wparam;
      }
  }
  
  /*******************************************************************
   *		FlashWindowEx (USER32.@)
   */
  BOOL WINAPI FlashWindowEx( PFLASHWINFO pfwi )
  {
      FIXME("%p\n", pfwi);
      return TRUE;
  }
  
  /*******************************************************************
   *		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 0;
      }
      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);
  
      rect.left = pt.x - wDragWidth;
      rect.right = pt.x + wDragWidth;
  
      rect.top = pt.y - wDragHeight;
      rect.bottom = pt.y + wDragHeight;
  
      SetCapture(hWnd);
  
      while(1)
      {
          while (PeekMessageW( &msg, 0, WM_MOUSEFIRST, WM_MOUSELAST, PM_REMOVE ))
          {
              if( msg.message == WM_LBUTTONUP )
              {
                  ReleaseCapture();
                  return 0;
              }
              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 1;
                  }
              }
          }
          WaitMessage();
      }
      return 0;
  }
  
  /******************************************************************************
   *		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 GetWindowInfo( HWND hwnd, PWINDOWINFO pwi)
  {
      if (!pwi) return FALSE;
      if (!IsWindow(hwnd)) return FALSE;
  
      GetWindowRect(hwnd, &pwi->rcWindow);
      GetClientRect(hwnd, &pwi->rcClient);
      /* translate to screen coordinates */
      MapWindowPoints(hwnd, 0, (LPPOINT)&pwi->rcClient, 2);
  
      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("SwitchDesktop(hwnd %p) stub!\n", hDesktop);
      return TRUE;
  }
  
  /*****************************************************************************
   *              SetLayeredWindowAttributes (USER32.@)
   */
  BOOL WINAPI SetLayeredWindowAttributes( HWND hwnd, COLORREF key, BYTE alpha, DWORD flags )
  {
      BOOL ret;
  
      TRACE("(%p,%08x,%d,%x): stub!\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 );
  
      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 )
  {
      BYTE alpha = 0xff;
  
      if (!(info->dwFlags & ULW_EX_NORESIZE) && (info->pptDst || info->psize))
      {
          int x = 0, y = 0, cx = 0, cy = 0;
          DWORD flags = SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW | SWP_NOSENDCHANGING;
  
          if (info->pptDst)
          {
              x = info->pptDst->x;
              y = info->pptDst->y;
              flags &= ~SWP_NOMOVE;
          }
          if (info->psize)
          {
              cx = info->psize->cx;
              cy = info->psize->cy;
              flags &= ~SWP_NOSIZE;
          }
          TRACE( "moving window %p pos %d,%d %dx%x\n", hwnd, x, y, cx, cy );
          SetWindowPos( hwnd, 0, x, y, cx, cy, flags );
      }
  
      if (info->hdcSrc)
      {
          RECT rect;
          HDC hdc = GetDCEx( hwnd, 0, DCX_CACHE );
  
          if (hdc)
          {
              int x = 0, y = 0;
  
              GetClientRect( hwnd, &rect );
              if (info->pptSrc)
              {
                  x = info->pptSrc->x;
                  y = info->pptSrc->y;
              }
              /* FIXME: intersect rect with info->prcDirty */
              TRACE( "copying window %p pos %d,%d\n", hwnd, x, y );
              BitBlt( hdc, rect.left, rect.top, rect.right, rect.bottom,
                      info->hdcSrc, rect.left + x, rect.top + y, SRCCOPY );
              ReleaseDC( hwnd, hdc );
          }
      }
  
      if (info->pblend && !(info->dwFlags & ULW_OPAQUE)) alpha = info->pblend->SourceConstantAlpha;
      TRACE( "setting window %p alpha %u\n", hwnd, alpha );
      USER_Driver->pSetLayeredWindowAttributes( hwnd, info->crKey, alpha,
                                                info->dwFlags & (LWA_ALPHA | LWA_COLORKEY) );
      return TRUE;
  }
  
  
  /*****************************************************************************
   *              UpdateLayeredWindow (USER32.@)
   */
  BOOL WINAPI UpdateLayeredWindow( HWND hwnd, HDC hdcDst, POINT *pptDst, SIZE *psize,
                                   HDC hdcSrc, POINT *pptSrc, COLORREF crKey, BLENDFUNCTION *pblend,
                                   DWORD dwFlags)
  {
      UPDATELAYEREDWINDOWINFO info;
  
      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  = dwFlags;
      info.prcDirty = NULL;
      return UpdateLayeredWindowIndirect( hwnd, &info );
  }
  
  /* 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 );
  }
  