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gdi32: Added a test for the case where lpvBits in GetDIBits is NULL and the bitcount is 0.

This commit is contained in:
Jeremy White 2007-07-13 11:32:10 -05:00 committed by Alexandre Julliard
parent fa23944695
commit a2c2b60292
1 changed files with 41 additions and 0 deletions
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41
dlls/gdi32/tests/bitmap.c
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@ -1791,6 +1791,46 @@ static void test_bitmapinfoheadersize(void)
ReleaseDC(0, hdc);
}
static void test_get16dibits(void)
{
BYTE bits[4 * (16 / sizeof(BYTE))];
HBITMAP hbmp;
HDC screen_dc = GetDC(NULL);
int ret;
BITMAPINFO * info;
int info_len = sizeof(BITMAPINFOHEADER) + 1024;
BYTE *p;
int overwritten_bytes = 0;
memset(bits, 0, sizeof(bits));
hbmp = CreateBitmap(2, 2, 1, 16, bits);
ok(hbmp != NULL, "CreateBitmap failed\n");
info = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, info_len);
assert(info);
memset(info, '!', info_len);
memset(info, 0, sizeof(info->bmiHeader));
info->bmiHeader.biSize = sizeof(info->bmiHeader);
info->bmiHeader.biWidth = 2;
info->bmiHeader.biHeight = 2;
info->bmiHeader.biPlanes = 1;
info->bmiHeader.biCompression = BI_RGB;
ret = GetDIBits(screen_dc, hbmp, 0, 0, NULL, info, 0);
ok(ret != 0, "GetDIBits failed\n");
for (p = ((BYTE *) info) + sizeof(info->bmiHeader); (p - ((BYTE *) info)) < info_len; p++)
if (*p != '!')
overwritten_bytes++;
ok(overwritten_bytes == 0, "GetDIBits wrote past the buffer given\n");
DeleteObject(hbmp);
ReleaseDC(NULL, screen_dc);
}
START_TEST(bitmap)
{
is_win9x = GetWindowLongPtrW(GetDesktopWindow(), GWLP_WNDPROC) == 0;
@ -1809,4 +1849,5 @@ START_TEST(bitmap)
test_select_object();
test_CreateBitmap();
test_bitmapinfoheadersize();
test_get16dibits();
}