wine/dlls/gdi32/tests/dc.c

/*
 * Unit tests for dc functions
 *
 * Copyright (c) 2005 Huw Davies
 * Copyright (c) 2005 Dmitry Timoshkov
 *
 * 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
 */

#define WINVER 0x0501 /* request latest DEVMODE */

#include <assert.h>
#include <stdio.h>

#include "wine/test.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winspool.h"
#include "winerror.h"

static DWORD (WINAPI *pSetLayout)(HDC hdc, DWORD layout);

static void dump_region(HRGN hrgn)
{
    DWORD i, size;
    RGNDATA *data = NULL;
    RECT *rect;

    if (!hrgn)
    {
        printf( "(null) region\n" );
        return;
    }
    if (!(size = GetRegionData( hrgn, 0, NULL ))) return;
    if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return;
    GetRegionData( hrgn, size, data );
    printf( "%d rects:", data->rdh.nCount );
    for (i = 0, rect = (RECT *)data->Buffer; i < data->rdh.nCount; i++, rect++)
        printf( " (%d,%d)-(%d,%d)", rect->left, rect->top, rect->right, rect->bottom );
    printf( "\n" );
    HeapFree( GetProcessHeap(), 0, data );
}

static void test_savedc_2(void)
{
    HWND hwnd;
    HDC hdc;
    HRGN hrgn;
    RECT rc, rc_clip;
    int ret;

    hwnd = CreateWindowExA(0, "static", "", WS_POPUP, 0,0,100,100,
                           0, 0, 0, NULL);
    assert(hwnd != 0);
    ShowWindow(hwnd, SW_SHOW);
    UpdateWindow(hwnd);

    hrgn = CreateRectRgn(0, 0, 0, 0);
    assert(hrgn != 0);

    hdc = GetDC(hwnd);
    ok(hdc != NULL, "GetDC failed\n");

    ret = GetClipBox(hdc, &rc_clip);
    ok(ret == SIMPLEREGION || broken(ret == COMPLEXREGION), "GetClipBox returned %d instead of SIMPLEREGION\n", ret);
    ret = GetClipRgn(hdc, hrgn);
    ok(ret == 0, "GetClipRgn returned %d instead of 0\n", ret);
    ret = GetRgnBox(hrgn, &rc);
    ok(ret == NULLREGION, "GetRgnBox returned %d (%d,%d-%d,%d) instead of NULLREGION\n",
       ret, rc.left, rc.top, rc.right, rc.bottom);
    /*dump_region(hrgn);*/
    SetRect(&rc, 0, 0, 100, 100);
    ok(EqualRect(&rc, &rc_clip),
       "rects are not equal: (%d,%d-%d,%d) - (%d,%d-%d,%d)\n",
       rc.left, rc.top, rc.right, rc.bottom,
       rc_clip.left, rc_clip.top, rc_clip.right, rc_clip.bottom);

    ret = SaveDC(hdc);
todo_wine
{
    ok(ret == 1, "ret = %d\n", ret);
}

    ret = IntersectClipRect(hdc, 0, 0, 50, 50);
    if (ret == COMPLEXREGION)
    {
        /* XP returns COMPLEXREGION although dump_region reports only 1 rect */
        trace("Windows BUG: IntersectClipRect returned %d instead of SIMPLEREGION\n", ret);
        /* let's make sure that it's a simple region */
        ret = GetClipRgn(hdc, hrgn);
        ok(ret == 1, "GetClipRgn returned %d instead of 1\n", ret);
        dump_region(hrgn);
    }
    else
        ok(ret == SIMPLEREGION, "IntersectClipRect returned %d instead of SIMPLEREGION\n", ret);

    ret = GetClipBox(hdc, &rc_clip);
    ok(ret == SIMPLEREGION || broken(ret == COMPLEXREGION), "GetClipBox returned %d instead of SIMPLEREGION\n", ret);
    SetRect(&rc, 0, 0, 50, 50);
    ok(EqualRect(&rc, &rc_clip),
       "rects are not equal: (%d,%d-%d,%d) - (%d,%d-%d,%d)\n",
       rc.left, rc.top, rc.right, rc.bottom,
       rc_clip.left, rc_clip.top, rc_clip.right, rc_clip.bottom);

    ret = RestoreDC(hdc, 1);
    ok(ret, "ret = %d\n", ret);

    ret = GetClipBox(hdc, &rc_clip);
    ok(ret == SIMPLEREGION || broken(ret == COMPLEXREGION), "GetClipBox returned %d instead of SIMPLEREGION\n", ret);
    SetRect(&rc, 0, 0, 100, 100);
    ok(EqualRect(&rc, &rc_clip),
       "rects are not equal: (%d,%d-%d,%d) - (%d,%d-%d,%d)\n",
       rc.left, rc.top, rc.right, rc.bottom,
       rc_clip.left, rc_clip.top, rc_clip.right, rc_clip.bottom);

    DeleteObject(hrgn);
    ReleaseDC(hwnd, hdc);
    DestroyWindow(hwnd);
}

static void test_savedc(void)
{
    HDC hdc = CreateDCA("DISPLAY", NULL, NULL, NULL);
    int ret;

    ok(hdc != NULL, "CreateDC rets %p\n", hdc);

    ret = SaveDC(hdc);
    ok(ret == 1, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 2, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 3, "ret = %d\n", ret);
    ret = RestoreDC(hdc, -1);
    ok(ret, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 3, "ret = %d\n", ret);
    ret = RestoreDC(hdc, 1);
    ok(ret, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 1, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 2, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 3, "ret = %d\n", ret);
    ret = RestoreDC(hdc, -2);
    ok(ret, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 2, "ret = %d\n", ret);
    ret = RestoreDC(hdc, -2);
    ok(ret, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 1, "ret = %d\n", ret);
    ret = SaveDC(hdc);
    ok(ret == 2, "ret = %d\n", ret); 
    ret = RestoreDC(hdc, -4);
    ok(!ret, "ret = %d\n", ret);
    ret = RestoreDC(hdc, 3);
    ok(!ret, "ret = %d\n", ret);

    /* Under Win9x the following RestoreDC call succeeds and clears the save stack. */
    ret = RestoreDC(hdc, -3);
    ok(!ret ||
       broken(ret), /* Win9x */
       "ret = %d\n", ret);

    /* Trying to clear an empty save stack fails. */
    ret = RestoreDC(hdc, -3);
    ok(!ret, "ret = %d\n", ret);

    ret = SaveDC(hdc);
    ok(ret == 3 ||
       broken(ret == 1), /* Win9x */
       "ret = %d\n", ret);

    /* Under Win9x the following RestoreDC call succeeds and clears the save stack. */
    ret = RestoreDC(hdc, 0);
    ok(!ret ||
       broken(ret), /* Win9x */
       "ret = %d\n", ret);

    /* Trying to clear an empty save stack fails. */
    ret = RestoreDC(hdc, 0);
    ok(!ret, "ret = %d\n", ret);

    ret = RestoreDC(hdc, 1);
    ok(ret ||
       broken(!ret), /* Win9x */
       "ret = %d\n", ret);

    DeleteDC(hdc);
}

static void test_GdiConvertToDevmodeW(void)
{
    DEVMODEW * (WINAPI *pGdiConvertToDevmodeW)(const DEVMODEA *);
    DEVMODEA dmA;
    DEVMODEW *dmW;
    BOOL ret;

    pGdiConvertToDevmodeW = (void *)GetProcAddress(GetModuleHandleA("gdi32.dll"), "GdiConvertToDevmodeW");
    if (!pGdiConvertToDevmodeW)
    {
        win_skip("GdiConvertToDevmodeW is not available on this platform\n");
        return;
    }

    ret = EnumDisplaySettingsA(NULL, ENUM_CURRENT_SETTINGS, &dmA);
    ok(ret, "EnumDisplaySettingsExA error %u\n", GetLastError());
    ok(dmA.dmSize >= FIELD_OFFSET(DEVMODEA, dmICMMethod), "dmSize is too small: %04x\n", dmA.dmSize);
    ok(dmA.dmSize <= sizeof(DEVMODEA), "dmSize is too large: %04x\n", dmA.dmSize);

    dmW = pGdiConvertToDevmodeW(&dmA);
    ok(dmW->dmSize >= FIELD_OFFSET(DEVMODEW, dmICMMethod), "dmSize is too small: %04x\n", dmW->dmSize);
    ok(dmW->dmSize <= sizeof(DEVMODEW), "dmSize is too large: %04x\n", dmW->dmSize);
    HeapFree(GetProcessHeap(), 0, dmW);

    dmA.dmSize = FIELD_OFFSET(DEVMODEA, dmFields) + sizeof(dmA.dmFields);
    dmW = pGdiConvertToDevmodeW(&dmA);
    ok(dmW->dmSize == FIELD_OFFSET(DEVMODEW, dmFields) + sizeof(dmW->dmFields),
       "wrong size %u\n", dmW->dmSize);
    HeapFree(GetProcessHeap(), 0, dmW);

    dmA.dmICMMethod = DMICMMETHOD_NONE;
    dmA.dmSize = FIELD_OFFSET(DEVMODEA, dmICMMethod) + sizeof(dmA.dmICMMethod);
    dmW = pGdiConvertToDevmodeW(&dmA);
    ok(dmW->dmSize == FIELD_OFFSET(DEVMODEW, dmICMMethod) + sizeof(dmW->dmICMMethod),
       "wrong size %u\n", dmW->dmSize);
    ok(dmW->dmICMMethod == DMICMMETHOD_NONE,
       "expected DMICMMETHOD_NONE, got %u\n", dmW->dmICMMethod);
    HeapFree(GetProcessHeap(), 0, dmW);

    dmA.dmSize = 1024;
    dmW = pGdiConvertToDevmodeW(&dmA);
    ok(dmW->dmSize == FIELD_OFFSET(DEVMODEW, dmPanningHeight) + sizeof(dmW->dmPanningHeight),
       "wrong size %u\n", dmW->dmSize);
    HeapFree(GetProcessHeap(), 0, dmW);

    SetLastError(0xdeadbeef);
    dmA.dmSize = 0;
    dmW = pGdiConvertToDevmodeW(&dmA);
    ok(!dmW, "GdiConvertToDevmodeW should fail\n");
    ok(GetLastError() == 0xdeadbeef, "expected 0xdeadbeef, got %u\n", GetLastError());

    /* this is the minimal dmSize that XP accepts */
    dmA.dmSize = FIELD_OFFSET(DEVMODEA, dmFields);
    dmW = pGdiConvertToDevmodeW(&dmA);
    ok(dmW->dmSize == FIELD_OFFSET(DEVMODEW, dmFields),
       "expected %04x, got %04x\n", FIELD_OFFSET(DEVMODEW, dmFields), dmW->dmSize);
    HeapFree(GetProcessHeap(), 0, dmW);
}

static void test_device_caps( HDC hdc, HDC ref_dc, const char *descr )
{
    static const int caps[] =
    {
        DRIVERVERSION,
        TECHNOLOGY,
        HORZSIZE,
        VERTSIZE,
        HORZRES,
        VERTRES,
        BITSPIXEL,
        PLANES,
        NUMBRUSHES,
        NUMPENS,
        NUMMARKERS,
        NUMFONTS,
        NUMCOLORS,
        PDEVICESIZE,
        CURVECAPS,
        LINECAPS,
        POLYGONALCAPS,
        TEXTCAPS,
        CLIPCAPS,
        RASTERCAPS,
        ASPECTX,
        ASPECTY,
        ASPECTXY,
        LOGPIXELSX,
        LOGPIXELSY,
        SIZEPALETTE,
        NUMRESERVED,
        COLORRES,
        PHYSICALWIDTH,
        PHYSICALHEIGHT,
        PHYSICALOFFSETX,
        PHYSICALOFFSETY,
        SCALINGFACTORX,
        SCALINGFACTORY,
        VREFRESH,
        DESKTOPVERTRES,
        DESKTOPHORZRES,
        BLTALIGNMENT,
        SHADEBLENDCAPS,
        COLORMGMTCAPS
    };
    unsigned int i;

    if (GetObjectType( hdc ) == OBJ_METADC)
        for (i = 0; i < sizeof(caps)/sizeof(caps[0]); i++)
            ok( GetDeviceCaps( hdc, caps[i] ) == (caps[i] == TECHNOLOGY ? DT_METAFILE : 0),
                "wrong caps on %s for %u: %u\n", descr, caps[i],
                GetDeviceCaps( hdc, caps[i] ) );
    else
        for (i = 0; i < sizeof(caps)/sizeof(caps[0]); i++)
            ok( GetDeviceCaps( hdc, caps[i] ) == GetDeviceCaps( ref_dc, caps[i] ),
                "mismatched caps on %s for %u: %u/%u\n", descr, caps[i],
                GetDeviceCaps( hdc, caps[i] ), GetDeviceCaps( ref_dc, caps[i] ) );

    if (GetObjectType( hdc ) == OBJ_MEMDC)
    {
        char buffer[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)];
        BITMAPINFO *info = (BITMAPINFO *)buffer;
        HBITMAP dib, old;

        memset( buffer, 0, sizeof(buffer) );
        info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
        info->bmiHeader.biWidth = 16;
        info->bmiHeader.biHeight = 16;
        info->bmiHeader.biPlanes = 1;
        info->bmiHeader.biBitCount = 8;
        info->bmiHeader.biCompression = BI_RGB;
        dib = CreateDIBSection( ref_dc, info, DIB_RGB_COLORS, NULL, NULL, 0 );
        old = SelectObject( hdc, dib );

        for (i = 0; i < sizeof(caps)/sizeof(caps[0]); i++)
            ok( GetDeviceCaps( hdc, caps[i] ) == GetDeviceCaps( ref_dc, caps[i] ),
                "mismatched caps on %s and DIB for %u: %u/%u\n", descr, caps[i],
                GetDeviceCaps( hdc, caps[i] ), GetDeviceCaps( ref_dc, caps[i] ) );

        SelectObject( hdc, old );
        DeleteObject( dib );
    }
}

static void test_CreateCompatibleDC(void)
{
    BOOL bRet;
    HDC hdc, hNewDC, hdcMetafile, screen_dc;
    HBITMAP bitmap;
    INT caps;

    screen_dc = GetDC( 0 );
    bitmap = CreateBitmap( 10, 10, 1, 1, NULL );

    /* Create a DC compatible with the screen */
    hdc = CreateCompatibleDC(NULL);
    ok(hdc != NULL, "CreateCompatibleDC returned %p\n", hdc);
    ok( SelectObject( hdc, bitmap ) != 0, "SelectObject failed\n" );
    caps = GetDeviceCaps( hdc, TECHNOLOGY );
    ok( caps == DT_RASDISPLAY, "wrong caps %u\n", caps );

    test_device_caps( hdc, screen_dc, "display dc" );

    /* Delete this DC, this should succeed */
    bRet = DeleteDC(hdc);
    ok(bRet == TRUE, "DeleteDC returned %u\n", bRet);

    /* Try to create a DC compatible to the deleted DC. This has to fail */
    hNewDC = CreateCompatibleDC(hdc);
    ok(hNewDC == NULL, "CreateCompatibleDC returned %p\n", hNewDC);

    hdc = GetDC( 0 );
    hdcMetafile = CreateEnhMetaFileA(hdc, NULL, NULL, NULL);
    ok(hdcMetafile != 0, "CreateEnhMetaFileA failed\n");
    hNewDC = CreateCompatibleDC( hdcMetafile );
    ok(hNewDC != NULL, "CreateCompatibleDC failed\n");
    ok( SelectObject( hNewDC, bitmap ) != 0, "SelectObject failed\n" );
    caps = GetDeviceCaps( hdcMetafile, TECHNOLOGY );
    ok( caps == DT_RASDISPLAY, "wrong caps %u\n", caps );
    caps = GetDeviceCaps( hNewDC, TECHNOLOGY );
    ok( caps == DT_RASDISPLAY, "wrong caps %u\n", caps );
    DeleteDC( hNewDC );
    DeleteEnhMetaFile( CloseEnhMetaFile( hdcMetafile ));
    ReleaseDC( 0, hdc );

    hdcMetafile = CreateMetaFileA(NULL);
    ok(hdcMetafile != 0, "CreateEnhMetaFileA failed\n");
    hNewDC = CreateCompatibleDC( hdcMetafile );
    ok(hNewDC == NULL, "CreateCompatibleDC succeeded\n");
    caps = GetDeviceCaps( hdcMetafile, TECHNOLOGY );
    ok( caps == DT_METAFILE, "wrong caps %u\n", caps );
    test_device_caps( hdcMetafile, screen_dc, "metafile dc" );
    DeleteMetaFile( CloseMetaFile( hdcMetafile ));

    DeleteObject( bitmap );
    ReleaseDC( 0, screen_dc );
}

static void test_DC_bitmap(void)
{
    HDC hdc, hdcmem;
    DWORD bits[64];
    HBITMAP hbmp, oldhbmp;
    COLORREF col;
    int i, bitspixel;

    /* fill bitmap data with b&w pattern */
    for( i = 0; i < 64; i++) bits[i] = i & 1 ? 0 : 0xffffff;

    hdc = GetDC(0);
    ok( hdc != NULL, "CreateDC rets %p\n", hdc);
    bitspixel = GetDeviceCaps( hdc, BITSPIXEL);
    /* create a memory dc */
    hdcmem = CreateCompatibleDC( hdc);
    ok( hdcmem != NULL, "CreateCompatibleDC rets %p\n", hdcmem);
    /* tests */
    /* test monochrome bitmap: should always work */
    hbmp = CreateBitmap(32, 32, 1, 1, bits);
    ok( hbmp != NULL, "CreateBitmap returns %p\n", hbmp);
    oldhbmp = SelectObject( hdcmem, hbmp);
    ok( oldhbmp != NULL, "SelectObject returned NULL\n" ); /* a memdc always has a bitmap selected */
    col = GetPixel( hdcmem, 0, 0);
    ok( col == 0xffffff, "GetPixel returned %08x, expected 00ffffff\n", col);
    col = GetPixel( hdcmem, 1, 1);
    ok( col == 0x000000, "GetPixel returned %08x, expected 00000000\n", col);
    col = GetPixel( hdcmem, 100, 1);
    ok( col == CLR_INVALID, "GetPixel returned %08x, expected ffffffff\n", col);
    SelectObject( hdcmem, oldhbmp);
    DeleteObject( hbmp);

    /* test with 2 bits color depth, not likely to succeed */
    hbmp = CreateBitmap(16, 16, 1, 2, bits);
    ok( hbmp != NULL, "CreateBitmap returns %p\n", hbmp);
    oldhbmp = SelectObject( hdcmem, hbmp);
    if( bitspixel != 2)
        ok( !oldhbmp, "SelectObject of a bitmap with 2 bits/pixel should return  NULL\n");
    if( oldhbmp) SelectObject( hdcmem, oldhbmp);
    DeleteObject( hbmp);

    /* test with 16 bits color depth, might succeed */
    hbmp = CreateBitmap(6, 6, 1, 16, bits);
    ok( hbmp != NULL, "CreateBitmap returns %p\n", hbmp);
    oldhbmp = SelectObject( hdcmem, hbmp);
    if( bitspixel == 16) {
        ok( oldhbmp != NULL, "SelectObject returned NULL\n" );
        col = GetPixel( hdcmem, 0, 0);
        ok( col == 0xffffff,
            "GetPixel of a bitmap with 16 bits/pixel returned %08x, expected 00ffffff\n", col);
        col = GetPixel( hdcmem, 1, 1);
        ok( col == 0x000000,
            "GetPixel of a bitmap with 16 bits/pixel returned returned %08x, expected 00000000\n", col);
    }
    if( oldhbmp) SelectObject( hdcmem, oldhbmp);
    DeleteObject( hbmp);

    /* test with 32 bits color depth, probably succeed */
    hbmp = CreateBitmap(4, 4, 1, 32, bits);
    ok( hbmp != NULL, "CreateBitmap returns %p\n", hbmp);
    oldhbmp = SelectObject( hdcmem, hbmp);
    if( bitspixel == 32) {
        ok( oldhbmp != NULL, "SelectObject returned NULL\n" );
        col = GetPixel( hdcmem, 0, 0);
        ok( col == 0xffffff,
            "GetPixel of a bitmap with 32 bits/pixel returned %08x, expected 00ffffff\n", col);
        col = GetPixel( hdcmem, 1, 1);
        ok( col == 0x000000,
            "GetPixel of a bitmap with 32 bits/pixel returned returned %08x, expected 00000000\n", col);
    }
    if( oldhbmp) SelectObject( hdcmem, oldhbmp);
    DeleteObject( hbmp);
    ReleaseDC( 0, hdc );
}

static void test_DeleteDC(void)
{
    HWND hwnd;
    HDC hdc, hdc_test;
    WNDCLASSEX cls;
    int ret;

    /* window DC */
    hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP|WS_VISIBLE, 0,0,100,100,
                           0, 0, 0, NULL);
    ok(hwnd != 0, "CreateWindowExA failed\n");

    hdc = GetDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(!ret || broken(ret) /* win9x */, "GetObjectType should fail for a deleted DC\n");

    hdc = GetWindowDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(!ret || broken(ret) /* win9x */, "GetObjectType should fail for a deleted DC\n");

    DestroyWindow(hwnd);

    /* desktop window DC */
    hwnd = GetDesktopWindow();
    ok(hwnd != 0, "GetDesktopWindow failed\n");

    hdc = GetDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(!ret || broken(ret) /* win9x */, "GetObjectType should fail for a deleted DC\n");

    hdc = GetWindowDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(!ret || broken(ret) /* win9x */, "GetObjectType should fail for a deleted DC\n");

    /* CS_CLASSDC */
    memset(&cls, 0, sizeof(cls));
    cls.cbSize = sizeof(cls);
    cls.style = CS_CLASSDC;
    cls.hInstance = GetModuleHandle(0);
    cls.lpszClassName = "Wine class DC";
    cls.lpfnWndProc = DefWindowProcA;
    ret = RegisterClassExA(&cls);
    ok(ret, "RegisterClassExA failed\n");

    hwnd = CreateWindowExA(0, "Wine class DC", NULL, WS_POPUP|WS_VISIBLE, 0,0,100,100,
                           0, 0, 0, NULL);
    ok(hwnd != 0, "CreateWindowExA failed\n");

    hdc = GetDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = ReleaseDC(hwnd, hdc);
    ok(ret, "ReleaseDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);

    hdc_test = hdc;

    hdc = GetWindowDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(!ret || broken(ret) /* win9x */, "GetObjectType should fail for a deleted DC\n");

    DestroyWindow(hwnd);

    ret = GetObjectType(hdc_test);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);

    ret = UnregisterClassA("Wine class DC", GetModuleHandle(NULL));
    ok(ret, "UnregisterClassA failed\n");

    ret = GetObjectType(hdc_test);
todo_wine
    ok(!ret, "GetObjectType should fail for a deleted DC\n");

    /* CS_OWNDC */
    memset(&cls, 0, sizeof(cls));
    cls.cbSize = sizeof(cls);
    cls.style = CS_OWNDC;
    cls.hInstance = GetModuleHandle(0);
    cls.lpszClassName = "Wine own DC";
    cls.lpfnWndProc = DefWindowProcA;
    ret = RegisterClassExA(&cls);
    ok(ret, "RegisterClassExA failed\n");

    hwnd = CreateWindowExA(0, "Wine own DC", NULL, WS_POPUP|WS_VISIBLE, 0,0,100,100,
                           0, 0, 0, NULL);
    ok(hwnd != 0, "CreateWindowExA failed\n");

    hdc = GetDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = ReleaseDC(hwnd, hdc);
    ok(ret, "ReleaseDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);

    hdc = GetWindowDC(hwnd);
    ok(hdc != 0, "GetDC failed\n");
    ret = GetObjectType(hdc);
    ok(ret == OBJ_DC, "expected OBJ_DC, got %d\n", ret);
    ret = DeleteDC(hdc);
    ok(ret, "DeleteDC failed\n");
    ret = GetObjectType(hdc);
    ok(!ret || broken(ret) /* win9x */, "GetObjectType should fail for a deleted DC\n");

    DestroyWindow(hwnd);

    ret = UnregisterClassA("Wine own DC", GetModuleHandle(NULL));
    ok(ret, "UnregisterClassA failed\n");
}

static void test_boundsrect(void)
{
    HDC hdc;
    HBITMAP bitmap;
    RECT rect, expect, set_rect;
    UINT ret;

    hdc = CreateCompatibleDC(0);
    ok(hdc != NULL, "CreateCompatibleDC failed\n");
    bitmap = CreateCompatibleBitmap( hdc, 200, 200 );
    SelectObject( hdc, bitmap );

    ret = GetBoundsRect(hdc, NULL, 0);
    ok(ret == 0, "Expected GetBoundsRect to return 0, got %u\n", ret);

    ret = GetBoundsRect(hdc, NULL, ~0U);
    ok(ret == 0, "Expected GetBoundsRect to return 0, got %u\n", ret);

    /* Test parameter handling order. */
    SetRect(&set_rect, 10, 20, 40, 50);
    ret = SetBoundsRect(hdc, &set_rect, DCB_SET);
    ok(ret & DCB_RESET,
       "Expected return flag DCB_RESET to be set, got %u\n", ret);

    ret = GetBoundsRect(hdc, NULL, DCB_RESET);
    ok(ret == 0,
       "Expected GetBoundsRect to return 0, got %u\n", ret);

    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_RESET,
       "Expected GetBoundsRect to return DCB_RESET, got %u\n", ret);
    SetRect(&expect, 0, 0, 0, 0);
    ok(EqualRect(&rect, &expect) ||
       broken(EqualRect(&rect, &set_rect)), /* nt4 sp1-5 */
       "Expected output rectangle (0,0)-(0,0), got (%d,%d)-(%d,%d)\n",
       rect.left, rect.top, rect.right, rect.bottom);

    ret = GetBoundsRect(NULL, NULL, 0);
    ok(ret == 0, "Expected GetBoundsRect to return 0, got %u\n", ret);

    ret = GetBoundsRect(NULL, NULL, ~0U);
    ok(ret == 0, "Expected GetBoundsRect to return 0, got %u\n", ret);

    ret = SetBoundsRect(NULL, NULL, 0);
    ok(ret == 0, "Expected SetBoundsRect to return 0, got %u\n", ret);

    ret = SetBoundsRect(NULL, NULL, ~0U);
    ok(ret == 0, "Expected SetBoundsRect to return 0, got %u\n", ret);

    SetRect(&set_rect, 10, 20, 40, 50);
    ret = SetBoundsRect(hdc, &set_rect, DCB_SET);
    ok(ret == (DCB_RESET | DCB_DISABLE), "SetBoundsRect returned %x\n", ret);

    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
    SetRect(&expect, 10, 20, 40, 50);
    ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
       rect.left, rect.top, rect.right, rect.bottom);

    SetMapMode( hdc, MM_ANISOTROPIC );
    SetViewportExtEx( hdc, 2, 2, NULL );
    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
    SetRect(&expect, 5, 10, 20, 25);
    ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
       rect.left, rect.top, rect.right, rect.bottom);

    SetViewportOrgEx( hdc, 20, 30, NULL );
    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
    SetRect(&expect, -5, -5, 10, 10);
    ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
       rect.left, rect.top, rect.right, rect.bottom);

    SetRect(&set_rect, 10, 20, 40, 50);
    ret = SetBoundsRect(hdc, &set_rect, DCB_SET);
    ok(ret == (DCB_SET | DCB_DISABLE), "SetBoundsRect returned %x\n", ret);

    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
    SetRect(&expect, 10, 20, 40, 50);
    ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
       rect.left, rect.top, rect.right, rect.bottom);

    SetMapMode( hdc, MM_TEXT );
    SetViewportOrgEx( hdc, 0, 0, NULL );
    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
    SetRect(&expect, 40, 70, 100, 130);
    ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
       rect.left, rect.top, rect.right, rect.bottom);

    if (pSetLayout)
    {
        pSetLayout( hdc, LAYOUT_RTL );
        ret = GetBoundsRect(hdc, &rect, 0);
        ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
        SetRect(&expect, 159, 70, 99, 130);
        ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
           rect.left, rect.top, rect.right, rect.bottom);
        SetRect(&set_rect, 50, 25, 30, 35);
        ret = SetBoundsRect(hdc, &set_rect, DCB_SET);
        ok(ret == (DCB_SET | DCB_DISABLE), "SetBoundsRect returned %x\n", ret);
        ret = GetBoundsRect(hdc, &rect, 0);
        ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
        SetRect(&expect, 50, 25, 30, 35);
        ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
           rect.left, rect.top, rect.right, rect.bottom);

        pSetLayout( hdc, LAYOUT_LTR );
        ret = GetBoundsRect(hdc, &rect, 0);
        ok(ret == DCB_SET, "GetBoundsRect returned %x\n", ret);
        SetRect(&expect, 149, 25, 169, 35);
        ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
           rect.left, rect.top, rect.right, rect.bottom);
    }

    /* empty rect resets, except on nt4 */
    SetRect(&expect, 20, 20, 10, 10);
    ret = SetBoundsRect(hdc, &set_rect, DCB_SET);
    ok(ret == (DCB_SET | DCB_DISABLE), "SetBoundsRect returned %x\n", ret);
    ret = GetBoundsRect(hdc, &rect, 0);
    ok(ret == DCB_RESET || broken(ret == DCB_SET)  /* nt4 */,
       "GetBoundsRect returned %x\n", ret);
    if (ret == DCB_RESET)
    {
        SetRect(&expect, 0, 0, 0, 0);
        ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
           rect.left, rect.top, rect.right, rect.bottom);

        SetRect(&expect, 20, 20, 20, 20);
        ret = SetBoundsRect(hdc, &set_rect, DCB_SET);
        ok(ret == (DCB_RESET | DCB_DISABLE), "SetBoundsRect returned %x\n", ret);
        ret = GetBoundsRect(hdc, &rect, 0);
        ok(ret == DCB_RESET, "GetBoundsRect returned %x\n", ret);
        SetRect(&expect, 0, 0, 0, 0);
        ok(EqualRect(&rect, &expect), "Got (%d,%d)-(%d,%d)\n",
           rect.left, rect.top, rect.right, rect.bottom);
    }

    DeleteDC( hdc );
    DeleteObject( bitmap );
}

static void test_desktop_colorres(void)
{
    HDC hdc = GetDC(NULL);
    int bitspixel, colorres;

    bitspixel = GetDeviceCaps(hdc, BITSPIXEL);
    ok(bitspixel != 0, "Expected to get valid BITSPIXEL capability value\n");

    colorres = GetDeviceCaps(hdc, COLORRES);
    ok(colorres != 0 ||
       broken(colorres == 0), /* Win9x */
       "Expected to get valid COLORRES capability value\n");

    if (colorres)
    {
        switch (bitspixel)
        {
        case 8:
            ok(colorres == 18,
               "Expected COLORRES to be 18, got %d\n", colorres);
            break;
        case 16:
            ok(colorres == 16,
               "Expected COLORRES to be 16, got %d\n", colorres);
            break;
        case 24:
        case 32:
            ok(colorres == 24,
               "Expected COLORRES to be 24, got %d\n", bitspixel);
            break;
        default:
            ok(0, "Got unknown BITSPIXEL %d with COLORRES %d\n", bitspixel, colorres);
            break;
        }
    }

    ReleaseDC(NULL, hdc);
}

static void test_gamma(void)
{
    BOOL ret;
    HDC hdc = GetDC(NULL);
    WORD oldramp[3][256], ramp[3][256];
    INT i;

    ret = GetDeviceGammaRamp(hdc, &oldramp);
    if (!ret)
    {
        win_skip("GetDeviceGammaRamp failed, skipping tests\n");
        goto done;
    }

    /* try to set back old ramp */
    ret = SetDeviceGammaRamp(hdc, &oldramp);
    if (!ret)
    {
        win_skip("SetDeviceGammaRamp failed, skipping tests\n");
        goto done;
    }

    memcpy(ramp, oldramp, sizeof(ramp));

    /* set one color ramp to zeros */
    memset(ramp[0], 0, sizeof(ramp[0]));
    ret = SetDeviceGammaRamp(hdc, &ramp);
    ok(!ret, "SetDeviceGammaRamp succeeded\n");

    /* set one color ramp to a flat straight rising line */
    for (i = 0; i < 256; i++) ramp[0][i] = i;
    ret = SetDeviceGammaRamp(hdc, &ramp);
    todo_wine ok(!ret, "SetDeviceGammaRamp succeeded\n");

    /* set one color ramp to a steep straight rising line */
    for (i = 0; i < 256; i++) ramp[0][i] = i * 256;
    ret = SetDeviceGammaRamp(hdc, &ramp);
    ok(ret, "SetDeviceGammaRamp failed\n");

    /* try a bright gamma ramp */
    ramp[0][0] = 0;
    ramp[0][1] = 0x7FFF;
    for (i = 2; i < 256; i++) ramp[0][i] = 0xFFFF;
    ret = SetDeviceGammaRamp(hdc, &ramp);
    ok(!ret, "SetDeviceGammaRamp succeeded\n");

    /* try ramps which are not uniform */
    ramp[0][0] = 0;
    for (i = 1; i < 256; i++) ramp[0][i] = ramp[0][i - 1] + 512;
    ret = SetDeviceGammaRamp(hdc, &ramp);
    ok(ret, "SetDeviceGammaRamp failed\n");
    ramp[0][0] = 0;
    for (i = 2; i < 256; i+=2)
    {
        ramp[0][i - 1] = ramp[0][i - 2];
        ramp[0][i] = ramp[0][i - 2] + 512;
    }
    ret = SetDeviceGammaRamp(hdc, &ramp);
    ok(ret, "SetDeviceGammaRamp failed\n");

    /* cleanup: set old ramp again */
    ret = SetDeviceGammaRamp(hdc, &oldramp);
    ok(ret, "SetDeviceGammaRamp failed\n");

done:
    ReleaseDC(NULL, hdc);
}

static HDC create_printer_dc(void)
{
    char buffer[260];
    DWORD len;
    PRINTER_INFO_2A *pbuf = NULL;
    DRIVER_INFO_3A *dbuf = NULL;
    HANDLE hprn = 0;
    HDC hdc = 0;
    HMODULE winspool = LoadLibraryA( "winspool.drv" );
    BOOL (WINAPI *pOpenPrinterA)(LPSTR, HANDLE *, LPPRINTER_DEFAULTSA);
    BOOL (WINAPI *pGetDefaultPrinterA)(LPSTR, LPDWORD);
    BOOL (WINAPI *pGetPrinterA)(HANDLE, DWORD, LPBYTE, DWORD, LPDWORD);
    BOOL (WINAPI *pGetPrinterDriverA)(HANDLE, LPSTR, DWORD, LPBYTE, DWORD, LPDWORD);
    BOOL (WINAPI *pClosePrinter)(HANDLE);

    pGetDefaultPrinterA = (void *)GetProcAddress( winspool, "GetDefaultPrinterA" );
    pOpenPrinterA = (void *)GetProcAddress( winspool, "OpenPrinterA" );
    pGetPrinterA = (void *)GetProcAddress( winspool, "GetPrinterA" );
    pGetPrinterDriverA = (void *)GetProcAddress( winspool, "GetPrinterDriverA" );
    pClosePrinter = (void *)GetProcAddress( winspool, "ClosePrinter" );

    if (!pGetDefaultPrinterA || !pOpenPrinterA || !pGetPrinterA || !pGetPrinterDriverA || !pClosePrinter)
        goto done;

    len = sizeof(buffer);
    if (!pGetDefaultPrinterA( buffer, &len )) goto done;
    if (!pOpenPrinterA( buffer, &hprn, NULL )) goto done;

    pGetPrinterA( hprn, 2, NULL, 0, &len );
    pbuf = HeapAlloc( GetProcessHeap(), 0, len );
    if (!pGetPrinterA( hprn, 2, (LPBYTE)pbuf, len, &len )) goto done;

    pGetPrinterDriverA( hprn, NULL, 3, NULL, 0, &len );
    dbuf = HeapAlloc( GetProcessHeap(), 0, len );
    if (!pGetPrinterDriverA( hprn, NULL, 3, (LPBYTE)dbuf, len, &len )) goto done;

    hdc = CreateDCA( dbuf->pDriverPath, pbuf->pPrinterName, pbuf->pPortName, pbuf->pDevMode );
    trace( "hdc %p for driver '%s' printer '%s' port '%s'\n", hdc,
           dbuf->pDriverPath, pbuf->pPrinterName, pbuf->pPortName );
done:
    HeapFree( GetProcessHeap(), 0, dbuf );
    HeapFree( GetProcessHeap(), 0, pbuf );
    if (hprn) pClosePrinter( hprn );
    if (winspool) FreeLibrary( winspool );
    if (!hdc) skip( "could not create a DC for the default printer\n" );
    return hdc;
}

static void test_printer_dc(void)
{
    HDC memdc, display_memdc;
    HBITMAP orig, bmp;
    DWORD ret;
    HDC hdc = create_printer_dc();

    if (!hdc) return;

    memdc = CreateCompatibleDC( hdc );
    display_memdc = CreateCompatibleDC( 0 );

    ok( memdc != NULL, "CreateCompatibleDC failed for printer\n" );
    ok( display_memdc != NULL, "CreateCompatibleDC failed for screen\n" );

    ret = GetDeviceCaps( hdc, TECHNOLOGY );
    ok( ret == DT_RASPRINTER, "wrong type %u\n", ret );

    ret = GetDeviceCaps( memdc, TECHNOLOGY );
    ok( ret == DT_RASPRINTER, "wrong type %u\n", ret );

    ret = GetDeviceCaps( display_memdc, TECHNOLOGY );
    ok( ret == DT_RASDISPLAY, "wrong type %u\n", ret );

    test_device_caps( memdc, hdc, "printer dc" );

    bmp = CreateBitmap( 100, 100, 1, GetDeviceCaps( hdc, BITSPIXEL ), NULL );
    orig = SelectObject( memdc, bmp );
    ok( orig != NULL, "SelectObject failed\n" );
    ok( BitBlt( hdc, 10, 10, 20, 20, memdc, 0, 0, SRCCOPY ), "BitBlt failed\n" );

    ok( !SelectObject( display_memdc, bmp ), "SelectObject succeeded\n" );
    SelectObject( memdc, orig );
    DeleteObject( bmp );

    bmp = CreateBitmap( 100, 100, 1, 1, NULL );
    orig = SelectObject( display_memdc, bmp );
    ok( orig != NULL, "SelectObject failed\n" );
    ok( !SelectObject( memdc, bmp ), "SelectObject succeeded\n" );
    ok( BitBlt( hdc, 10, 10, 20, 20, display_memdc, 0, 0, SRCCOPY ), "BitBlt failed\n" );
    ok( BitBlt( memdc, 10, 10, 20, 20, display_memdc, 0, 0, SRCCOPY ), "BitBlt failed\n" );
    ok( BitBlt( display_memdc, 10, 10, 20, 20, memdc, 0, 0, SRCCOPY ), "BitBlt failed\n" );

    ret = GetPixel( hdc, 0, 0 );
    ok( ret == CLR_INVALID, "wrong pixel value %x\n", ret );

    DeleteDC( memdc );
    DeleteDC( display_memdc );
    DeleteDC( hdc );
    DeleteObject( bmp );
}

START_TEST(dc)
{
    pSetLayout = (void *)GetProcAddress( GetModuleHandle("gdi32.dll"), "SetLayout");
    test_savedc();
    test_savedc_2();
    test_GdiConvertToDevmodeW();
    test_CreateCompatibleDC();
    test_DC_bitmap();
    test_DeleteDC();
    test_boundsrect();
    test_desktop_colorres();
    test_gamma();
    test_printer_dc();
}