Hi, I'm writing a program which uses cairo to paint some customized semi-transparent widgets.These widgets might overlap with each other. However I didn't find a way to make the widgets truely semi-transparent. If a widget is covered by another widget, then the covered area will always be erased by the upper widget. A test program and its screenshot is attached. The program draws a window with two fixed widgets, both are painted with cairo. One is semi-transparent green another is blue. No matter if composite extension is enabled or not, the result is not what I expect. Anyone know how to implement real semi-transparent widgets with current gtk?
Regards James Su
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