dlls/user32/tests/dce.c - wine - Git at Google

 /*
  * 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 <assert.h>
 #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;

 /* test behavior of DC attributes with various GetDC/ReleaseDC combinations */
 static void test_dc_attributes(void)
 {
     HDC hdc, old_hdc;
     INT rop, def_rop;

     /* 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 );

     ReleaseDC( hwnd_cache, hdc );
     hdc = GetDC( hwnd_cache );
     rop = GetROP2( hdc );
     ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
     SetROP2( hdc, R2_WHITE );
     ReleaseDC( hwnd_cache, hdc );

     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
     rop = GetROP2( hdc );
     /* Win9x seems to silently ignore DCX_NORESETATTRS */
     ok( rop == def_rop || rop == R2_WHITE, "wrong ROP2 %d\n", rop );

     SetROP2( hdc, R2_WHITE );
     rop = GetROP2( hdc );
     ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );

     ReleaseDC( hwnd_cache, hdc );
     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
     rop = GetROP2( hdc );
     ok( rop == def_rop || rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
     ReleaseDC( hwnd_cache, hdc );

     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE );
     rop = GetROP2( hdc );
     ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
     ReleaseDC( hwnd_cache, hdc );

     /* 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;
     ReleaseDC( hwnd_owndc, hdc );
     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 );
     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;
     ReleaseDC( hwnd_classdc, hdc );
     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 );
     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 );
     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 );
     ReleaseDC( hwnd_classdc, old_hdc );
     ReleaseDC( hwnd_classdc, hdc );
     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;

     /* 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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 sould have been reset %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );

     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     ReleaseDC( hwnd_classdc2, hdc );
 }


 /* test various BeginPaint/EndPaint behaviors */
 static void test_begin_paint(void)
 {
     HDC old_hdc, hdc;
     RECT rect;
     PAINTSTRUCT ps;

     /* 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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );

     /* 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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );

     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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
 }

 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);
 }

 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, (LPSTR)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);

     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 );
     test_dc_attributes();
     test_parameters();
     test_dc_visrgn();
     test_begin_paint();
     test_invisible_create();
 }
	/*
	* 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 <assert.h>
	#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;

	/* test behavior of DC attributes with various GetDC/ReleaseDC combinations */
	static void test_dc_attributes(void)
	{
	HDC hdc, old_hdc;
	INT rop, def_rop;

	/* 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 );

	ReleaseDC( hwnd_cache, hdc );
	hdc = GetDC( hwnd_cache );
	rop = GetROP2( hdc );
	ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
	SetROP2( hdc, R2_WHITE );
	ReleaseDC( hwnd_cache, hdc );

	hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE \| DCX_NORESETATTRS );
	rop = GetROP2( hdc );
	/* Win9x seems to silently ignore DCX_NORESETATTRS */
	ok( rop == def_rop \|\| rop == R2_WHITE, "wrong ROP2 %d\n", rop );

	SetROP2( hdc, R2_WHITE );
	rop = GetROP2( hdc );
	ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );

	ReleaseDC( hwnd_cache, hdc );
	hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE \| DCX_NORESETATTRS );
	rop = GetROP2( hdc );
	ok( rop == def_rop \|\| rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
	ReleaseDC( hwnd_cache, hdc );

	hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE );
	rop = GetROP2( hdc );
	ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
	ReleaseDC( hwnd_cache, hdc );

	/* 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;
	ReleaseDC( hwnd_owndc, hdc );
	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 );
	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;
	ReleaseDC( hwnd_classdc, hdc );
	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 );
	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 );
	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 );
	ReleaseDC( hwnd_classdc, old_hdc );
	ReleaseDC( hwnd_classdc, hdc );
	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;

	/* 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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 sould have been reset %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );

	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	ReleaseDC( hwnd_classdc2, hdc );
	}


	/* test various BeginPaint/EndPaint behaviors */
	static void test_begin_paint(void)
	{
	HDC old_hdc, hdc;
	RECT rect;
	PAINTSTRUCT ps;

	/* 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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );

	/* 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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );

	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 %d,%d-%d,%d\n", rect.left, rect.top, rect.right, rect.bottom );
	}

	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);
	}

	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, (LPSTR)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);

	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 );
	test_dc_attributes();
	test_parameters();
	test_dc_visrgn();
	test_begin_paint();
	test_invisible_create();
	}