<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <style style="display: none;" id="owaParaStyle" type="text/css">P {margin-top:0;margin-bottom:0;}</style> </head> <body tabindex="0" aria-label="Message body" fpstyle="1" dir="ltr"> <div name="divtagdefaultwrapper" id="divtagdefaultwrapper" style="font-family: Calibri,Arial,Helvetica,sans-serif; font-size: 12pt; color: #000000; margin: 0"> Hello, I am using Cairomm to create some images. I am trying to paint an ImageSurface onto a device surface, having written data into the surface. I'm doing this two ways, either by setting the ImageSurface as the source directly, or by creating a SurfacePattern from the ImageSurface. The image has two colors, one of which has an alpha of 0. Either way works fine if I use a PNG device surface, but if I try the exact same thing with a PDF device surface, the "invisible" color isn't invisible. As I research this I go back and forth between "this should just work" and "this is impossible" but surely there is a way to do what I need. Here's what I'm trying: RefPtr<ImageSurface> csurf = ImageSurface::create(FORMAT_ARGB32, s.height, s.width); /* code to write the image surface */ RefPtr<SurfacePattern> fillpat = SurfacePattern::create(csurf) fillpat->set_extend(EXTEND_REPEAT); ctx.set_source(fillpat); ctx.paint(); Or: RefPtr<ImageSurface> csurf = ImageSurface::create(FORMAT_ARGB32, s.height, s.width); /* code to write the image surface */ ctx.set_source(meshimage, 0, 0); ctx.paint(); Any help would be much appreciated. Thanks in advance, Logan <div style="font-family:Tahoma; font-size:13px"> <div style="font-family:Tahoma; font-size:13px"> <div style="font-family:Tahoma; font-size:13px"> <div style="font-family:Tahoma; font-size:13px">-- Logan Ratner | Senior Consultant | Bluware Inc. 16285 Park 10 Place Suite 300, Houston, TX 77084 logan.ratner@bluware.com | P: 713.335.1524 www.bluware.com | We bring your vision to code. <a target="_blank" href="http://www.fergusonbeauregard.com/" tabindex="0" rel="nofollow"></a></div> </div> </div> </div> </div> </body> </html>