Path: utzoo!attcan!uunet!husc6!mailrus!ncar!tank!nic.MR.NET!umn-cs!randy
From: randy@umn-cs.CS.UMN.EDU (Randy Orrison)
Newsgroups: comp.windows.x
Subject: Where's the pointer? (was: How do I draw on a widget?)
Message-ID: <10504@umn-cs.CS.UMN.EDU>
Date: 20 Dec 88 03:01:43 GMT
References: <10461@umn-cs.CS.UMN.EDU> <8812162154.AA02843@EXPO.LCS.MIT.EDU>
Reply-To: randy@umn-cs.cs.umn.edu (Randy Orrison)
Organization: Chemical Computer Thinking Battery, St. Paul, MN
Lines: 31

In article <8812162154.AA02843@EXPO.LCS.MIT.EDU> rws@EXPO.LCS.MIT.EDU (Bob Scheifler) writes:
>    What kind of Widget should I use to draw on, and how do I do it?
>In the HP widget set, you can use the WorkSpace widget.

Works great!

>    The thing that bothers me is that this error does not occur
>    at the time of the XDrawRectangle call, but later.
>That's because of the asynchronous nature of X.  If you can
>run your application with -synchronize, it would have happened
>at the time of the call.

When I switched over to the WorkSpace widget, I noticed a callback
XtNexpose which I attached my drawing routine to, thereby solving the
above mentioned problem, as well as another one I came up with - how
do I get my picture re-drawn when it's exposed.  So far, everything is
wonderful.

Now, the new question:  I've attached a routine to the XtNselect
callback which gets called when a button is pushed.  How do I tell
where the pointer is within my widget when this happens, and how do I
tell what button was pushed?  (I'm willing to bet that these two
questions have almost the same answer, but I can't find it...)

Thnaks to all who responded to my previous question!

	-randy
--
Randy Orrison, Chemical Computer Thinking Battery  --  randy@cctb.mn.org
(aka randy@{ux.acss.umn.edu, umn-cs.uucp, umnacca.bitnet, halcdc.uucp})
"Stealing a rhinoceros should not be attempted lightly."