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gdiplus: Add a test for drawing to HDC's backed by 32-bit alpha dibs.

This commit is contained in:
Vincent Povirk 2012-12-03 16:00:36 -06:00 committed by Alexandre Julliard
parent e8b6701fe1
commit 2ddb3b7d93
1 changed files with 50 additions and 0 deletions
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50
dlls/gdiplus/tests/graphics.c
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@ -4083,6 +4083,55 @@ static void test_measured_extra_space(void)
GdipDeleteStringFormat(format);
}
static void test_alpha_hdc(void)
{
GpStatus status;
HDC hdc;
HBITMAP hbm, old_hbm;
GpGraphics *graphics;
ULONG *bits;
BITMAPINFO bmi;
hdc = CreateCompatibleDC(0);
ok(hdc != NULL, "CreateCompatibleDC failed\n");
bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader);
bmi.bmiHeader.biHeight = 5;
bmi.bmiHeader.biWidth = 5;
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biClrUsed = 0;
hbm = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, (void**)&bits, NULL, 0);
ok(hbm != NULL, "CreateDIBSection failed\n");
old_hbm = SelectObject(hdc, hbm);
status = GdipCreateFromHDC(hdc, &graphics);
expect(Ok, status);
bits[0] = 0xdeadbeef;
status = GdipGraphicsClear(graphics, 0xffaaaaaa);
expect(Ok, status);
todo_wine expect(0xffaaaaaa, bits[0]);
SelectObject(hdc, old_hbm);
bits[0] = 0xdeadbeef;
status = GdipGraphicsClear(graphics, 0xffbbbbbb);
expect(Ok, status);
todo_wine expect(0xffbbbbbb, bits[0]);
GdipDeleteGraphics(graphics);
DeleteObject(hbm);
DeleteDC(hdc);
}
START_TEST(graphics)
{
struct GdiplusStartupInput gdiplusStartupInput;
@ -4149,6 +4198,7 @@ START_TEST(graphics)
test_get_set_interpolation();
test_get_set_textrenderinghint();
test_getdc_scaled();
test_alpha_hdc();
GdiplusShutdown(gdiplusToken);
DestroyWindow( hwnd );