Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!ncar!mailrus!tut.cis.ohio-state.edu!bloom-beacon!RIACS.EDU!davy
From: davy@RIACS.EDU
Newsgroups: comp.windows.x
Subject: background pixmap in a widget
Message-ID: <8812092122.AA04208@intrepid.riacs.edu>
Date: 9 Dec 88 21:22:47 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 28


Okay, I made my own widget using the Template widget supplied with R3.
The X folks are to be congratulated on this, by the way -- it's well
documented, and I had my widget up and running in about 10 minutes.

Anyway, I'd like to have my widget come up with a custom background
pixmap made from some bitmap data I have.  So, I need someplace inside
the widget to put the line:

	pixmap = XCreateBitmapFromData(widget_display, widget_window,
			bitmap_bits, bitmap_width, bitmap_height);

and to set the background pixmap to this.

Right now, I have the "expose" part of the ClassRec structure set to
my own routine which creates the pixmap from the bitmap and retiles
the window the first time it is called.  The problem is, this produces
a sort of "flash" in the window since it gets mapped with the normal
background before I change it to the custom pixmap.

So, the question is, where *should* I put this code?  I want the widget
to create the pixmap, not the application.  As near as I can tell, I
also need to have this code somewhere where I can use the display and
window arguments for the widget.  Should I make my own RealizeProc?
Is there any documentation on what goes in a RealizeProc?

Any ideas?  Am I making sense?

--Dave Curry