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<DIV><FONT face=Arial size=2>Tried with </FONT><FONT face=Arial
size=2>cairo_paint_with_alpha, but that didn't seem to work.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=gurnett@glocalnet.net href="mailto:gurnett@glocalnet.net">Michael
Gurnett</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=cairo@cairographics.org
href="mailto:cairo@cairographics.org">cairo@cairographics.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 31, 2008 2:27
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [cairo] problem with
BitBlt</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I have the following bit of code</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>bckgrnd = new Graphics::TBitmap;<BR>
bckgrnd->Width = ClientWidth;<BR> bckgrnd->Height =
ClientHeight;<BR> HDC
hdc;<BR> hdc=bckgrnd->Canvas->Handle;<BR> cairo_pattern_t
*pat;<BR> cairo_surface_t *surface;<BR><BR> surface =
cairo_win32_surface_create (hdc);<BR> background = cairo_create
(surface);</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>....</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The idea is the to draw on the background surface
and BitBlt it on my paint routine. However, with the code above it appears
that the initial drawing space is filled white (guessing rgba are all 1). Is
there a way to get the initial drawing region to be
transparant. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Michael</FONT></DIV>
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