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gdiplus: Support reading image data from device-dependent bitmaps.

This commit is contained in:
Vincent Povirk 2009-12-12 17:33:58 -06:00 committed by Alexandre Julliard
parent 3424dac386
commit 25dcd43e52
1 changed files with 44 additions and 1 deletions
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45
dlls/gdiplus/image.c
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@ -2721,7 +2721,50 @@ GpStatus WINGDIPAPI GdipCreateBitmapFromHBITMAP(HBITMAP hbm, HPALETTE hpal, GpBi
}
else
{
FIXME("can only get image data from DIB sections\n");
HDC hdc;
HBITMAP oldhbm;
BITMAPINFO *pbmi;
INT src_height, dst_stride;
BYTE *dst_bits;
hdc = CreateCompatibleDC(NULL);
oldhbm = SelectObject(hdc, hbm);
pbmi = GdipAlloc(sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
if (pbmi)
{
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biBitCount = 0;
GetDIBits(hdc, hbm, 0, 0, NULL, pbmi, DIB_RGB_COLORS);
src_height = abs(pbmi->bmiHeader.biHeight);
if (pbmi->bmiHeader.biHeight > 0)
{
dst_bits = (BYTE*)lockeddata.Scan0+lockeddata.Stride*(src_height-1);
dst_stride = -lockeddata.Stride;
}
else
{
dst_bits = lockeddata.Scan0;
dst_stride = lockeddata.Stride;
}
for (y=0; y<src_height; y++)
{
GetDIBits(hdc, hbm, y, 1, dst_bits+dst_stride*y,
pbmi, DIB_RGB_COLORS);
}
GdipFree(pbmi);
}
else
retval = OutOfMemory;
SelectObject(hdc, oldhbm);
DeleteDC(hdc);
}
GdipBitmapUnlockBits(*bitmap, &lockeddata);