[gtkmm] Transparent rectangles/images?

["Drinkin Park" <drink_n_park hotmail com>]

Hi,

I have a quick question to ask:

Is there any way to draw a partially transparent rectangle or image to a 
Pixmap? I assume that if there was, the transparency would be set in the GC 
used in the draw function, but I can't find such a function in the GC class.

Or is this functionality supported in the OpenGL extension for gtkmm?


Thanks in advance.

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