text: /*
   * Unit tests for DCE support
   *
   * Copyright 2005 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 <stdlib.h>
  #include <stdarg.h>
  #include <stdio.h>
  
  #include "windef.h"
  #include "winbase.h"
  #include "wingdi.h"
  #include "winuser.h"
  
  #include "wine/test.h"
  
  #ifndef DCX_USESTYLE
  #define DCX_USESTYLE         0x00010000
  #endif
  
  static HWND hwnd_cache, hwnd_owndc, hwnd_classdc, hwnd_classdc2, hwnd_parent, hwnd_parentdc;
  
  /* test behavior of DC attributes with various GetDC/ReleaseDC combinations */
  static void test_dc_attributes(void)
  {
      HDC hdc, old_hdc;
      HDC hdcs[20];
      INT i, rop, def_rop, caps;
      BOOL found_dc;
  
      /* test cache DC */
  
      hdc = GetDC( hwnd_cache );
      def_rop = GetROP2( hdc );
  
      SetROP2( hdc, R2_WHITE );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  
      ok( WindowFromDC( hdc ) == hwnd_cache, "wrong window\n" );
      ReleaseDC( hwnd_cache, hdc );
      ok( WindowFromDC( hdc ) != hwnd_cache, "wrong window\n" );
      hdc = GetDC( hwnd_cache );
      rop = GetROP2( hdc );
      ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
      SetROP2( hdc, R2_WHITE );
      ok( WindowFromDC( hdc ) == hwnd_cache, "wrong window\n" );
      ReleaseDC( hwnd_cache, hdc );
      old_hdc = hdc;
  
      found_dc = FALSE;
      for (i = 0; i < 20; i++)
      {
          hdc = hdcs[i] = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
          if (!hdc) break;
          rop = GetROP2( hdc );
          ok( rop == def_rop, "wrong ROP2 %d after release %p/%p\n", rop, old_hdc, hdc );
          if (hdc == old_hdc)
          {
              found_dc = TRUE;
              SetROP2( hdc, R2_WHITE );
          }
      }
      if (!found_dc)
      {
          trace( "hdc %p not found in cache using %p\n", old_hdc, hdcs[0] );
          old_hdc = hdcs[0];
          SetROP2( old_hdc, R2_WHITE );
      }
      while (i > 0) ReleaseDC( hwnd_cache, hdcs[--i] );
  
      for (i = 0; i < 20; i++)
      {
          hdc = hdcs[i] = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
          if (!hdc) break;
          rop = GetROP2( hdc );
          if (hdc == old_hdc)
              ok( rop == R2_WHITE || broken( rop == def_rop),  /* win9x doesn't support DCX_NORESETATTRS */
                  "wrong ROP2 %d after release %p/%p\n", rop, old_hdc, hdc );
          else
              ok( rop == def_rop, "wrong ROP2 %d after release %p/%p\n", rop, old_hdc, hdc );
      }
      while (i > 0) ReleaseDC( hwnd_cache, hdcs[--i] );
  
      for (i = 0; i < 20; i++)
      {
          hdc = hdcs[i] = GetDCEx( hwnd_cache, 0, DCX_USESTYLE );
          if (!hdc) break;
          rop = GetROP2( hdc );
          if (hdc == old_hdc)
          {
              ok( rop == R2_WHITE || broken( rop == def_rop),
                  "wrong ROP2 %d after release %p/%p\n", rop, old_hdc, hdc );
              SetROP2( old_hdc, def_rop );
          }
          else
              ok( rop == def_rop, "wrong ROP2 %d after release %p/%p\n", rop, old_hdc, hdc );
      }
      while (i > 0) ReleaseDC( hwnd_cache, hdcs[--i] );
  
      /* Released cache DCs are 'disabled' */
      rop = SetROP2( old_hdc, R2_BLACK );
      ok( rop == 0, "got %d\n", rop );
      rop = GetROP2( old_hdc );
      ok( rop == 0, "got %d\n", rop );
      caps = GetDeviceCaps( old_hdc, HORZRES );
      ok( caps == 0, "got %d\n", caps );
      caps = GetDeviceCaps( old_hdc, VERTRES );
      ok( caps == 0, "got %d\n", caps );
      caps = GetDeviceCaps( old_hdc, NUMCOLORS );
      ok( caps == 0, "got %d\n", caps );
      ok( WindowFromDC( old_hdc ) != hwnd_cache, "wrong window\n" );
  
      hdc = GetDC(0);
      caps = GetDeviceCaps( hdc, HORZRES );
      ok( caps != 0, "got %d\n", caps );
      caps = GetDeviceCaps( hdc, VERTRES );
      ok( caps != 0, "got %d\n", caps );
      caps = GetDeviceCaps( hdc, NUMCOLORS );
      ok( caps != 0, "got %d\n", caps );
      ReleaseDC( 0, hdc );
      caps = GetDeviceCaps( hdc, HORZRES );
      ok( caps == 0, "got %d\n", caps );
      caps = GetDeviceCaps( hdc, VERTRES );
      ok( caps == 0, "got %d\n", caps );
      caps = GetDeviceCaps( hdc, NUMCOLORS );
      ok( caps == 0, "got %d\n", caps );
  
      /* test own DC */
  
      hdc = GetDC( hwnd_owndc );
      SetROP2( hdc, R2_WHITE );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  
      old_hdc = hdc;
      ok( WindowFromDC( hdc ) == hwnd_owndc, "wrong window\n" );
      ReleaseDC( hwnd_owndc, hdc );
      ok( WindowFromDC( hdc ) == hwnd_owndc, "wrong window\n" );
      hdc = GetDC( hwnd_owndc );
      ok( old_hdc == hdc, "didn't get same DC %p/%p\n", old_hdc, hdc );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
      ok( WindowFromDC( hdc ) == hwnd_owndc, "wrong window\n" );
      ReleaseDC( hwnd_owndc, hdc );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d after second release\n", rop );
  
      /* test class DC */
  
      hdc = GetDC( hwnd_classdc );
      SetROP2( hdc, R2_WHITE );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  
      old_hdc = hdc;
      ok( WindowFromDC( hdc ) == hwnd_classdc, "wrong window\n" );
      ReleaseDC( hwnd_classdc, hdc );
      ok( WindowFromDC( hdc ) == hwnd_classdc, "wrong window\n" );
      hdc = GetDC( hwnd_classdc );
      ok( old_hdc == hdc, "didn't get same DC %p/%p\n", old_hdc, hdc );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
      ok( WindowFromDC( hdc ) == hwnd_classdc, "wrong window\n" );
      ReleaseDC( hwnd_classdc, hdc );
      rop = GetROP2( hdc );
      ok( rop == R2_WHITE, "wrong ROP2 %d after second release\n", rop );
  
      /* test class DC with 2 windows */
  
      old_hdc = GetDC( hwnd_classdc );
      SetROP2( old_hdc, R2_BLACK );
      ok( WindowFromDC( old_hdc ) == hwnd_classdc, "wrong window\n" );
      hdc = GetDC( hwnd_classdc2 );
      ok( old_hdc == hdc, "didn't get same DC %p/%p\n", old_hdc, hdc );
      rop = GetROP2( hdc );
      ok( rop == R2_BLACK, "wrong ROP2 %d for other window\n", rop );
      ok( WindowFromDC( hdc ) == hwnd_classdc2, "wrong window\n" );
      ReleaseDC( hwnd_classdc, old_hdc );
      ReleaseDC( hwnd_classdc, hdc );
      ok( WindowFromDC( hdc ) == hwnd_classdc2, "wrong window\n" );
      rop = GetROP2( hdc );
      ok( rop == R2_BLACK, "wrong ROP2 %d after release\n", rop );
  }
  
  
  /* test behavior with various invalid parameters */
  static void test_parameters(void)
  {
      HDC hdc;
  
      hdc = GetDC( hwnd_cache );
      ok( ReleaseDC( hwnd_owndc, hdc ), "ReleaseDC with wrong window should succeed\n" );
  
      hdc = GetDC( hwnd_cache );
      ok( !ReleaseDC( hwnd_cache, 0 ), "ReleaseDC with wrong HDC should fail\n" );
      ok( ReleaseDC( hwnd_cache, hdc ), "correct ReleaseDC should succeed\n" );
      ok( !ReleaseDC( hwnd_cache, hdc ), "second ReleaseDC should fail\n" );
  
      hdc = GetDC( hwnd_owndc );
      ok( ReleaseDC( hwnd_cache, hdc ), "ReleaseDC with wrong window should succeed\n" );
      hdc = GetDC( hwnd_owndc );
      ok( ReleaseDC( hwnd_owndc, hdc ), "correct ReleaseDC should succeed\n" );
      ok( ReleaseDC( hwnd_owndc, hdc ), "second ReleaseDC should succeed\n" );
  
      hdc = GetDC( hwnd_classdc );
      ok( ReleaseDC( hwnd_cache, hdc ), "ReleaseDC with wrong window should succeed\n" );
      hdc = GetDC( hwnd_classdc );
      ok( ReleaseDC( hwnd_classdc, hdc ), "correct ReleaseDC should succeed\n" );
      ok( ReleaseDC( hwnd_classdc, hdc ), "second ReleaseDC should succeed\n" );
  }
  
  
  static void test_dc_visrgn(void)
  {
      HDC old_hdc, hdc;
      HRGN hrgn, hrgn2;
      RECT rect, parent_rect;
  
      /* cache DC */
  
      SetRect( &rect, 10, 10, 20, 20 );
      MapWindowPoints( hwnd_cache, 0, (POINT *)&rect, 2 );
      hrgn = CreateRectRgnIndirect( &rect );
      hdc = GetDCEx( hwnd_cache, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      ReleaseDC( hwnd_cache, hdc );
      ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
  
      /* cache DC with NORESETATTRS */
  
      SetRect( &rect, 10, 10, 20, 20 );
      MapWindowPoints( hwnd_cache, 0, (POINT *)&rect, 2 );
      hrgn = CreateRectRgnIndirect( &rect );
      hdc = GetDCEx( hwnd_cache, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE | DCX_NORESETATTRS );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      ReleaseDC( hwnd_cache, hdc );
      ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
      hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
          "clip box should have been reset %s\n", wine_dbgstr_rect( &rect ));
      ReleaseDC( hwnd_cache, hdc );
  
      /* window DC */
  
      SetRect( &rect, 10, 10, 20, 20 );
      MapWindowPoints( hwnd_owndc, 0, (POINT *)&rect, 2 );
      hrgn = CreateRectRgnIndirect( &rect );
      hdc = GetDCEx( hwnd_owndc, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      ReleaseDC( hwnd_owndc, hdc );
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      hdc = GetDCEx( hwnd_owndc, 0, DCX_USESTYLE );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      ReleaseDC( hwnd_owndc, hdc );
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
  
      SetRect( &rect, 20, 20, 30, 30 );
      MapWindowPoints( hwnd_owndc, 0, (POINT *)&rect, 2 );
      hrgn2 = CreateRectRgnIndirect( &rect );
      hdc = GetDCEx( hwnd_owndc, hrgn2, DCX_INTERSECTRGN | DCX_USESTYLE );
      ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
      ReleaseDC( hwnd_owndc, hdc );
      ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
      hdc = GetDCEx( hwnd_owndc, 0, DCX_EXCLUDERGN | DCX_USESTYLE );
      ok( GetRgnBox( hrgn2, &rect ) == ERROR, "region must no longer be valid\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30),
          "clip box should have been reset %s\n", wine_dbgstr_rect( &rect ));
      ReleaseDC( hwnd_owndc, hdc );
  
      /* class DC */
  
      SetRect( &rect, 10, 10, 20, 20 );
      MapWindowPoints( hwnd_classdc, 0, (POINT *)&rect, 2 );
      hrgn = CreateRectRgnIndirect( &rect );
      hdc = GetDCEx( hwnd_classdc, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      ReleaseDC( hwnd_classdc, hdc );
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
  
      hdc = GetDCEx( hwnd_classdc, 0, DCX_USESTYLE );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
      ReleaseDC( hwnd_classdc, hdc );
      ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
  
      SetRect( &rect, 20, 20, 30, 30 );
      MapWindowPoints( hwnd_classdc, 0, (POINT *)&rect, 2 );
      hrgn2 = CreateRectRgnIndirect( &rect );
      hdc = GetDCEx( hwnd_classdc, hrgn2, DCX_INTERSECTRGN | DCX_USESTYLE );
      ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
  
      old_hdc = hdc;
      hdc = GetDCEx( hwnd_classdc2, 0, DCX_USESTYLE );
      ok( old_hdc == hdc, "did not get the same hdc %p/%p\n", old_hdc, hdc );
      ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30),
          "clip box should have been reset %s\n", wine_dbgstr_rect( &rect ));
      ReleaseDC( hwnd_classdc2, hdc );
      ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
      hdc = GetDCEx( hwnd_classdc2, 0, DCX_EXCLUDERGN | DCX_USESTYLE );
      ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
      ok( !(rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30),
          "clip box must have been reset %s\n", wine_dbgstr_rect( &rect ));
      ReleaseDC( hwnd_classdc2, hdc );
  
      /* parent DC */
      hdc = GetDC( hwnd_parentdc );
      GetClipBox( hdc, &rect );
      ReleaseDC( hwnd_parentdc, hdc );
  
      hdc = GetDC( hwnd_parent );
      GetClipBox( hdc, &parent_rect );
      ReleaseDC( hwnd_parent, hdc );
  
      ok( EqualRect( &rect, &parent_rect ), "rect = %s, expected %s\n", wine_dbgstr_rect( &rect ),
          wine_dbgstr_rect( &parent_rect ));
  }
  
  
  /* test various BeginPaint/EndPaint behaviors */
  static void test_begin_paint(void)
  {
      HDC old_hdc, hdc;
      RECT rect, parent_rect;
      PAINTSTRUCT ps;
      COLORREF cr;
  
      /* cache DC */
  
      /* clear update region */
      RedrawWindow( hwnd_cache, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
      SetRect( &rect, 10, 10, 20, 20 );
      RedrawWindow( hwnd_cache, &rect, 0, RDW_INVALIDATE );
      hdc = BeginPaint( hwnd_cache, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      EndPaint( hwnd_cache, &ps );
  
      /* window DC */
  
      RedrawWindow( hwnd_owndc, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
      SetRect( &rect, 10, 10, 20, 20 );
      RedrawWindow( hwnd_owndc, &rect, 0, RDW_INVALIDATE );
      hdc = BeginPaint( hwnd_owndc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ReleaseDC( hwnd_owndc, hdc );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      ok( GetDC( hwnd_owndc ) == hdc, "got different hdc\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      EndPaint( hwnd_owndc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
          "clip box should have been reset %s\n", wine_dbgstr_rect( &rect ));
      RedrawWindow( hwnd_owndc, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
      SetRect( &rect, 10, 10, 20, 20 );
      RedrawWindow( hwnd_owndc, &rect, 0, RDW_INVALIDATE|RDW_ERASE );
      ok( GetDC( hwnd_owndc ) == hdc, "got different hdc\n" );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
          "clip box should be the whole window %s\n", wine_dbgstr_rect( &rect ));
      RedrawWindow( hwnd_owndc, NULL, 0, RDW_ERASENOW );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
          "clip box should still be the whole window %s\n", wine_dbgstr_rect( &rect ));
  
      /* class DC */
  
      RedrawWindow( hwnd_classdc, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
      SetRect( &rect, 10, 10, 20, 20 );
      RedrawWindow( hwnd_classdc, &rect, 0, RDW_INVALIDATE );
      hdc = BeginPaint( hwnd_classdc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
  
      old_hdc = hdc;
      hdc = GetDC( hwnd_classdc2 );
      ok( old_hdc == hdc, "did not get the same hdc %p/%p\n", old_hdc, hdc );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
          "clip box should have been reset %s\n", wine_dbgstr_rect( &rect ));
      ReleaseDC( hwnd_classdc2, hdc );
      EndPaint( hwnd_classdc, &ps );
  
      /* parent DC */
      RedrawWindow( hwnd_parent, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
      RedrawWindow( hwnd_parentdc, NULL, 0, RDW_INVALIDATE );
      hdc = BeginPaint( hwnd_parentdc, &ps );
      GetClipBox( hdc, &rect );
      cr = SetPixel( hdc, 10, 10, RGB(255, 0, 0) );
      ok( cr != -1, "error drawing outside of window client area\n" );
      EndPaint( hwnd_parentdc, &ps );
      GetClientRect( hwnd_parent, &parent_rect );
  
      ok( rect.left == parent_rect.left, "rect.left = %d, expected %d\n", rect.left, parent_rect.left );
      ok( rect.top == parent_rect.top, "rect.top = %d, expected %d\n", rect.top, parent_rect.top );
      todo_wine ok( rect.right == parent_rect.right, "rect.right = %d, expected %d\n", rect.right, parent_rect.right );
      todo_wine ok( rect.bottom == parent_rect.bottom, "rect.bottom = %d, expected %d\n", rect.bottom, parent_rect.bottom );
  
      hdc = GetDC( hwnd_parent );
      todo_wine ok( GetPixel( hdc, 10, 10 ) == cr, "error drawing outside of window client area\n" );
      ReleaseDC( hwnd_parent, hdc );
  }
  
  /* test ScrollWindow with window DCs */
  static void test_scroll_window(void)
  {
      PAINTSTRUCT ps;
      HDC hdc;
      RECT clip, rect;
  
      /* ScrollWindow uses the window DC, ScrollWindowEx doesn't */
  
      UpdateWindow( hwnd_owndc );
      SetRect( &clip, 25, 25, 50, 50 );
      ScrollWindow( hwnd_owndc, -5, -10, NULL, &clip );
      hdc = BeginPaint( hwnd_owndc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 25 && rect.top >= 25 && rect.right <= 50 && rect.bottom <= 50,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      EndPaint( hwnd_owndc, &ps );
  
      SetViewportExtEx( hdc, 2, 3, NULL );
      SetViewportOrgEx( hdc, 30, 20, NULL );
  
      ScrollWindow( hwnd_owndc, -5, -10, NULL, &clip );
      hdc = BeginPaint( hwnd_owndc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 25 && rect.top >= 25 && rect.right <= 50 && rect.bottom <= 50,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      EndPaint( hwnd_owndc, &ps );
  
      ScrollWindowEx( hwnd_owndc, -5, -10, NULL, &clip, 0, NULL, SW_INVALIDATE | SW_ERASE );
      hdc = BeginPaint( hwnd_owndc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= -5 && rect.top >= 5 && rect.right <= 20 && rect.bottom <= 30,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      EndPaint( hwnd_owndc, &ps );
  
      SetViewportExtEx( hdc, 1, 1, NULL );
      SetViewportOrgEx( hdc, 0, 0, NULL );
  
      ScrollWindowEx( hwnd_owndc, -5, -10, NULL, &clip, 0, NULL, SW_INVALIDATE | SW_ERASE );
      hdc = BeginPaint( hwnd_owndc, &ps );
      SetRectEmpty( &rect );
      GetClipBox( hdc, &rect );
      ok( rect.left >= 25 && rect.top >= 25 && rect.right <= 50 && rect.bottom <= 50,
          "invalid clip box %s\n", wine_dbgstr_rect( &rect ));
      EndPaint( hwnd_owndc, &ps );
  }
  
  static void test_invisible_create(void)
  {
      HWND hwnd_owndc = CreateWindowA("owndc_class", NULL, WS_OVERLAPPED,
                                      0, 200, 100, 100,
                                      0, 0, GetModuleHandleA(0), NULL );
      HDC dc1, dc2;
  
      dc1 = GetDC(hwnd_owndc);
      dc2 = GetDC(hwnd_owndc);
  
      ok(dc1 == dc2, "expected owndc dcs to match\n");
  
      ReleaseDC(hwnd_owndc, dc2);
      ReleaseDC(hwnd_owndc, dc1);
      DestroyWindow(hwnd_owndc);
  }
  
  static void test_dc_layout(void)
  {
      HWND hwnd_cache_rtl, hwnd_owndc_rtl, hwnd_classdc_rtl, hwnd_classdc2_rtl;
      HDC hdc;
      DWORD layout;
  
      hdc = GetDC( hwnd_cache );
      SetLayout( hdc, LAYOUT_RTL );
      layout = GetLayout( hdc );
      ReleaseDC( hwnd_cache, hdc );
      if (!layout)
      {
          win_skip( "SetLayout not supported\n" );
          return;
      }
  
      hwnd_cache_rtl = CreateWindowExA(WS_EX_LAYOUTRTL, "cache_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                       0, 0, 100, 100, 0, 0, GetModuleHandleA(0), NULL );
      hwnd_owndc_rtl = CreateWindowExA(WS_EX_LAYOUTRTL, "owndc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                       0, 200, 100, 100, 0, 0, GetModuleHandleA(0), NULL );
      hwnd_classdc_rtl = CreateWindowExA(WS_EX_LAYOUTRTL, "classdc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                         200, 0, 100, 100, 0, 0, GetModuleHandleA(0), NULL );
      hwnd_classdc2_rtl = CreateWindowExA(WS_EX_LAYOUTRTL, "classdc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                          200, 200, 100, 100, 0, 0, GetModuleHandleA(0), NULL );
      hdc = GetDC( hwnd_cache_rtl );
      layout = GetLayout( hdc );
  
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      SetLayout( hdc, 0 );
      ReleaseDC( hwnd_cache_rtl, hdc );
      hdc = GetDC( hwnd_owndc_rtl );
      layout = GetLayout( hdc );
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      ReleaseDC( hwnd_cache_rtl, hdc );
  
      hdc = GetDC( hwnd_cache );
      layout = GetLayout( hdc );
      ok( layout == 0, "wrong layout %x\n", layout );
      ReleaseDC( hwnd_cache, hdc );
  
      hdc = GetDC( hwnd_owndc_rtl );
      layout = GetLayout( hdc );
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      SetLayout( hdc, 0 );
      ReleaseDC( hwnd_owndc_rtl, hdc );
      hdc = GetDC( hwnd_owndc_rtl );
      layout = GetLayout( hdc );
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      ReleaseDC( hwnd_owndc_rtl, hdc );
  
      hdc = GetDC( hwnd_classdc_rtl );
      layout = GetLayout( hdc );
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      SetLayout( hdc, 0 );
      ReleaseDC( hwnd_classdc_rtl, hdc );
      hdc = GetDC( hwnd_classdc2_rtl );
      layout = GetLayout( hdc );
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      ReleaseDC( hwnd_classdc2_rtl, hdc );
      hdc = GetDC( hwnd_classdc );
      layout = GetLayout( hdc );
      ok( layout == LAYOUT_RTL, "wrong layout %x\n", layout );
      ReleaseDC( hwnd_classdc_rtl, hdc );
  
      DestroyWindow(hwnd_classdc2_rtl);
      DestroyWindow(hwnd_classdc_rtl);
      DestroyWindow(hwnd_owndc_rtl);
      DestroyWindow(hwnd_cache_rtl);
  }
  
  static void test_destroyed_window(void)
  {
      HDC dc, old_dc;
      int rop;
  
      dc = GetDC( hwnd_cache );
      SetROP2( dc, R2_WHITE );
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) == hwnd_cache, "wrong window\n" );
      old_dc = dc;
  
      DestroyWindow( hwnd_cache );
      rop = GetROP2( dc );
      ok( rop == 0, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) != hwnd_cache, "wrong window\n" );
      ok( !ReleaseDC( hwnd_cache, dc ), "ReleaseDC succeeded\n" );
      dc = GetDC( hwnd_cache );
      ok( !dc, "Got a non-NULL DC (%p) for a destroyed window\n", dc );
  
      dc = GetDC( hwnd_classdc );
      SetROP2( dc, R2_WHITE );
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) == hwnd_classdc, "wrong window\n" );
      old_dc = dc;
  
      dc = GetDC( hwnd_classdc2 );
      ok( old_dc == dc, "wrong DC\n" );
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) == hwnd_classdc2, "wrong window\n" );
      DestroyWindow( hwnd_classdc2 );
  
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) != hwnd_classdc2, "wrong window\n" );
      ok( !ReleaseDC( hwnd_classdc2, dc ), "ReleaseDC succeeded\n" );
      dc = GetDC( hwnd_classdc2 );
      ok( !dc, "Got a non-NULL DC (%p) for a destroyed window\n", dc );
  
      dc = GetDC( hwnd_classdc );
      ok( dc != 0, "Got NULL DC\n" );
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) == hwnd_classdc, "wrong window\n" );
      DestroyWindow( hwnd_classdc );
  
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) != hwnd_classdc, "wrong window\n" );
      ok( !ReleaseDC( hwnd_classdc, dc ), "ReleaseDC succeeded\n" );
      dc = GetDC( hwnd_classdc );
      ok( !dc, "Got a non-NULL DC (%p) for a destroyed window\n", dc );
  
      dc = GetDC( hwnd_owndc );
      ok( dc != 0, "Got NULL DC\n" );
      rop = GetROP2( dc );
      ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) == hwnd_owndc, "wrong window\n" );
      DestroyWindow( hwnd_owndc );
  
      rop = GetROP2( dc );
      ok( rop == 0, "wrong ROP2 %d\n", rop );
      ok( WindowFromDC( dc ) != hwnd_owndc, "wrong window\n" );
      ok( !ReleaseDC( hwnd_owndc, dc ), "ReleaseDC succeeded\n" );
      dc = GetDC( hwnd_owndc );
      ok( !dc, "Got a non-NULL DC (%p) for a destroyed window\n", dc );
  
      DestroyWindow( hwnd_parent );
  }
  
  START_TEST(dce)
  {
      WNDCLASSA cls;
  
      cls.style = CS_DBLCLKS;
      cls.lpfnWndProc = DefWindowProcA;
      cls.cbClsExtra = 0;
      cls.cbWndExtra = 0;
      cls.hInstance = GetModuleHandleA(0);
      cls.hIcon = 0;
      cls.hCursor = LoadCursorA(0, (LPCSTR)IDC_ARROW);
      cls.hbrBackground = GetStockObject(WHITE_BRUSH);
      cls.lpszMenuName = NULL;
      cls.lpszClassName = "cache_class";
      RegisterClassA(&cls);
      cls.style = CS_DBLCLKS | CS_OWNDC;
      cls.lpszClassName = "owndc_class";
      RegisterClassA(&cls);
      cls.style = CS_DBLCLKS | CS_CLASSDC;
      cls.lpszClassName = "classdc_class";
      RegisterClassA(&cls);
      cls.style = CS_PARENTDC;
      cls.lpszClassName = "parentdc_class";
      RegisterClassA(&cls);
  
      hwnd_cache = CreateWindowA("cache_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                 0, 0, 100, 100,
                                 0, 0, GetModuleHandleA(0), NULL );
      hwnd_owndc = CreateWindowA("owndc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                 0, 200, 100, 100,
                                 0, 0, GetModuleHandleA(0), NULL );
      hwnd_classdc = CreateWindowA("classdc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                   200, 0, 100, 100,
                                   0, 0, GetModuleHandleA(0), NULL );
      hwnd_classdc2 = CreateWindowA("classdc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                    200, 200, 100, 100,
                                    0, 0, GetModuleHandleA(0), NULL );
      hwnd_parent = CreateWindowA("static", NULL, WS_OVERLAPPED | WS_VISIBLE,
                                  400, 0, 100, 100, 0, 0, 0, NULL );
      hwnd_parentdc = CreateWindowA("parentdc_class", NULL, WS_CHILD | WS_VISIBLE,
                                    0, 0, 1, 1, hwnd_parent, 0, 0, NULL );
  
      test_dc_attributes();
      test_parameters();
      test_dc_visrgn();
      test_begin_paint();
      test_scroll_window();
      test_invisible_create();
      test_dc_layout();
      /* this should be last */
      test_destroyed_window();
  }
  