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From: mcintyrd@cs.rpi.edu (David McIntyre)
Newsgroups: comp.windows.x
Subject: Toolkit/Events question
Message-ID: <921@rpi.edu>
Date: 14 Mar 89 08:58:40 GMT
Sender: usenet@rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy, NY
Lines: 31

I have a question about the toolkit and event handling.

I have a box widget, which I want to draw on using the Xlib
graphics primitives.  I can do this, no problem.

Next, I want to catch exposure events on this widget so that
I can redraw the graphics if desired.  I do this by
calling XtAddEventHandler on this widget, with an
ExposureMask.

I catch lots of expose events.  This is good.  However, as
soon as I actually draw on the box, I no longer get
ANY expose events for this widget.  Adding the event
handler again does not help!

Synopsis:  The event handler on my box widget won't catch
expose events after I have drawn on it.

I am using X11R3, Athena Tookit, Sun 3/60.

I would really appreciate any help that anyone can send me.

			-Dave

PS.  I think this is a better question that than last
     stupid question I posted, eh?

Dave "mr question" McIntyre     |      "....say you're thinking about a plate
mcintyre@turing.cs.rpi.edu      |       of shrimp.....and someone says to 
office : 518-276-8633		|	you `plate,' or `shrimp'......"
home   : 518-271-6664		|