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user32: Use GetDIBits to retrieve the bitmap header when synthesizing a DIB. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2016-09-15 21:01:57 +09:00
parent 08aa64e38e
commit fe04dd2a4b
1 changed files with 17 additions and 17 deletions
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34
dlls/user32/clipboard.c
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@ -290,33 +290,33 @@ static HANDLE render_synthesized_dib( HANDLE data, UINT format, UINT from )
if (from == CF_BITMAP)
{
BITMAP bmp;
BITMAPV5HEADER header;
if (!GetObjectW( data, sizeof(bmp), &bmp )) goto done;
memset( &header, 0, sizeof(header) );
header.bV5Size = (format == CF_DIBV5) ? sizeof(BITMAPV5HEADER) : sizeof(BITMAPINFOHEADER);
if (!GetDIBits( hdc, data, 0, 0, NULL, (BITMAPINFO *)&header, DIB_RGB_COLORS )) goto done;
bits_size = abs( bmp.bmHeight ) * (((bmp.bmWidth * bmp.bmBitsPixel + 31) / 8) & ~3);
if (bmp.bmBitsPixel <= 8)
header_size = offsetof( BITMAPINFO, bmiColors[1 << bmp.bmBitsPixel] );
else
header_size = (format == CF_DIBV5) ? sizeof(BITMAPV5HEADER) : sizeof(BITMAPINFOHEADER);
if (!(ret = GlobalAlloc( GMEM_FIXED, header_size + bits_size ))) goto done;
header_size = bitmap_info_size( (BITMAPINFO *)&header, DIB_RGB_COLORS );
if (!(ret = GlobalAlloc( GMEM_FIXED, header_size + header.bV5SizeImage ))) goto done;
bmi = (BITMAPINFO *)ret;
memset( bmi, 0, header_size );
bmi->bmiHeader.biSize = header_size;
bmi->bmiHeader.biWidth = bmp.bmWidth;
bmi->bmiHeader.biHeight = bmp.bmHeight;
bmi->bmiHeader.biPlanes = 1;
bmi->bmiHeader.biBitCount = bmp.bmBitsPixel;
bmi->bmiHeader.biCompression = BI_RGB;
GetDIBits( hdc, data, 0, bmp.bmHeight, (char *)bmi + header_size, bmi, DIB_RGB_COLORS );
memcpy( bmi, &header, header.bV5Size );
GetDIBits( hdc, data, 0, abs(header.bV5Height), (char *)bmi + header_size, bmi, DIB_RGB_COLORS );
}
else
{
SIZE_T size = GlobalSize( data );
if (size < sizeof(*bmi)) goto done;
if (!(src = GlobalLock( data ))) goto done;
src_size = bitmap_info_size( src, DIB_RGB_COLORS );
bits_size = GlobalSize( data ) - src_size;
if (size <= src_size)
{
GlobalUnlock( data );
goto done;
}
bits_size = size - src_size;
header_size = (format == CF_DIBV5) ? sizeof(BITMAPV5HEADER) :
offsetof( BITMAPINFO, bmiColors[src->bmiHeader.biCompression == BI_BITFIELDS ? 3 : 0] );