fall back to wxAlphaBlend() if ::AlphaBlend() didn't work

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20571 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2003-05-09 23:57:34 +00:00
parent 4b8ab2f93a
commit a8fbc9cc57

View File

@@ -1004,21 +1004,21 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask
bf.SourceConstantAlpha = 0xff;
bf.AlphaFormat = AC_SRC_ALPHA;
if ( !pfnAlphaBlend(GetHdc(), x, y, width, height,
hdcMem, 0, 0, width, height,
bf) )
if ( pfnAlphaBlend(GetHdc(), x, y, width, height,
hdcMem, 0, 0, width, height,
bf) )
{
wxLogLastError(_T("AlphaBlend"));
// skip wxAlphaBlend() call below
return;
}
wxLogLastError(_T("AlphaBlend"));
}
else // use our own (probably much slower) implementation
{
// use our own (probably much slower) implementation
#ifdef wxHAVE_RAW_BITMAP
wxAlphaBlend(*this, x, y, width, height, bmp);
#else
wxLogLastError(_T("AlphaBlend not available with this compiler setup"));
#endif //#ifdef wxHAVE_RAW_BITMAP
}
wxAlphaBlend(*this, x, y, width, height, bmp);
#endif // wxHAVE_RAW_BITMAP
return;
}