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gdiplus: Allocate enough space for BITMAPINFO in GdipBitmapUnlockBits.

This commit is contained in:
Lei Zhang 2008-09-28 12:25:44 -07:00 committed by Alexandre Julliard
parent 2309a9e4ab
commit 778ea2360e
1 changed files with 9 additions and 7 deletions
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16
dlls/gdiplus/image.c
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@ -197,7 +197,7 @@ GpStatus WINGDIPAPI GdipBitmapUnlockBits(GpBitmap* bitmap,
HDC hdc;
HBITMAP old = NULL;
BOOL bm_is_selected;
BITMAPINFO bmi;
BITMAPINFO *pbmi;
if(!bitmap || !lockeddata)
return InvalidParameter;
@ -221,24 +221,26 @@ GpStatus WINGDIPAPI GdipBitmapUnlockBits(GpBitmap* bitmap,
IPicture_get_CurDC(bitmap->image.picture, &hdc);
bm_is_selected = (hdc != 0);
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biBitCount = 0;
pbmi = GdipAlloc(sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biBitCount = 0;
if(!bm_is_selected){
hdc = CreateCompatibleDC(0);
old = SelectObject(hdc, (HBITMAP)hbm);
}
GetDIBits(hdc, (HBITMAP)hbm, 0, 0, NULL, &bmi, DIB_RGB_COLORS);
bmi.bmiHeader.biBitCount = PIXELFORMATBPP(lockeddata->PixelFormat);
SetDIBits(hdc, (HBITMAP)hbm, 0, abs(bmi.bmiHeader.biHeight),
bitmap->bitmapbits, &bmi, DIB_RGB_COLORS);
GetDIBits(hdc, (HBITMAP)hbm, 0, 0, NULL, pbmi, DIB_RGB_COLORS);
pbmi->bmiHeader.biBitCount = PIXELFORMATBPP(lockeddata->PixelFormat);
SetDIBits(hdc, (HBITMAP)hbm, 0, abs(pbmi->bmiHeader.biHeight),
bitmap->bitmapbits, pbmi, DIB_RGB_COLORS);
if(!bm_is_selected){
SelectObject(hdc, old);
DeleteDC(hdc);
}
GdipFree(pbmi);
GdipFree(bitmap->bitmapbits);
bitmap->bitmapbits = NULL;
bitmap->lockmode = 0;