To: stalkern2 at tin.it
Cc: lablgtk at kaba.or.jp
Subject: Re: animation: pixmap transparency?
In-Reply-To: <200307071941.13532.stalkern2 at tin.it>
References: <200307021756.22997.stalkern2 at tin.it>
	<200307021824.19044.stalkern2@tin.it>
	<200307071941.13532.stalkern2@tin.it>
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Message-Id: <20030708093841E.garrigue at kurims.kyoto-u.ac.jp>
Date: Tue, 08 Jul 2003 09:38:41 +0900
From: Jacques Garrigue <garrigue at kurims.kyoto-u.ac.jp>
Lines: 17

> Hi, I'm using put_pixmap but I can't obtain that transparency is respected 
> when moving XPMs over each other. 
> 
> I have a Drawing Area, plus a background pixmap, plus a foreground pixmap. I 
> put the foreground pixmap on the drawing area: I can't see any better result 
> if I put the foreground pixmap on the background pixmap. Do I have to set any 
> alpha something? What am I missing? Thanks for any help.

Did you set a mask on your pixmap?
Transparency is controlled by the mask. If there is no mask, there is
no transparency. By the way, alpha-blending at the X11 level is not
supported.

Again, look at the GDraw module for useful functions, for instance
creating a transparent pixmap from an xpm file.

Jacques