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

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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
1 changed files with 11 additions and 11 deletions
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22
src/msw/dc.cpp
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@@ -1004,21 +1004,21 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask
bf.SourceConstantAlpha = 0xff; bf.SourceConstantAlpha = 0xff;
bf.AlphaFormat = AC_SRC_ALPHA; bf.AlphaFormat = AC_SRC_ALPHA;
if ( !pfnAlphaBlend(GetHdc(), x, y, width, height, if ( pfnAlphaBlend(GetHdc(), x, y, width, height,
hdcMem, 0, 0, width, height, hdcMem, 0, 0, width, height,
bf) ) 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 #ifdef wxHAVE_RAW_BITMAP
wxAlphaBlend(*this, x, y, width, height, bmp); wxAlphaBlend(*this, x, y, width, height, bmp);
#else #endif // wxHAVE_RAW_BITMAP
wxLogLastError(_T("AlphaBlend not available with this compiler setup"));
#endif //#ifdef wxHAVE_RAW_BITMAP
}
return; return;
} }