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How can I port MFC

TotalDC.TransparentBlt(position.x, position.y, width, height, &image1DC, 0, 0, width, height, RGB(255, 255, 255));

to GNOME/gdk/gtkmm/cairo?

I know that MFC "BitBlt();" can be ported using

image1->copy_area(0,0,width,height,Total,position.x,position.y);

But this function does not designate the transparent RGB(r,g,b).

Frank
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  • Please supplement the question post instead of writing in the comments so that it is more readable by future users. – Marco Sacchi Sep 26 '21 at 11:12
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Oct 05 '21 at 07:42

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