Re: overlaying a pixmap over an RGB image

[Taura Milana <learfox furry ao net>]

> I've created an RGB image from a data file, but now I want to be able to
> draw things on it which result from user interaction. How can I do this?
> I tried overlaying a pixmap on top of the RGB image, but it just covers
> it completely... apparently pixmaps arent transparent. :)  Any ideas?
>
> Rok

When you draw the GdkPixmap over the GdkWindow (GdkWindow
because that's where you 'put' your GDB RGB buffer first)
and then use a GdkGC with a clip mask created from the
GdkPixmap's mask (the GdkBitmap).  This will make the
transparent parts of the GdkPixmap, transparent.



--
Sincerely,                  ,"-_                         \|/
-Capt. Taura M.             ,   O=__                    --X--
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                  http://furry.ao.net/~learfox/