Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!nosc!ucsd!ucsdhub!hp-sdd!hplabs!hpda!hpcuhb!hp-sde!hpfcdc!hpfclp!diamant
From: diamant@hpfclp.SDE.HP.COM (John Diamant)
Newsgroups: comp.windows.x
Subject: Re: XtUnmapWidget
Message-ID: <9740043@hpfclp.SDE.HP.COM>
Date: 25 Jul 88 02:50:31 GMT
References: <8807222206.AA08510@dinorah.wustl.edu>
Organization: HP SDE, Fort Collins, CO
Lines: 30

> void NotImplemented()
>    {
>    XtMapWidget(w2);
>    XBell(dpy,50);
>    XFlush(dpy);
>    sleep(2);
>    XtUnmapWidget(w2);
>    XFlush(dpy);
>    }
> 
> Every time when I activated command widget m2, the program came to
> function c2 then it maps, rings bell, waits two seconds and unmaps.
> It's all there execpt the text --- "not implemented".

First of all, you might want to consider using XtPopup on a transientShell
widget rather playing with mapped when managed within a form (your choice,
but it would allow it to interact with a window manager better).

Anyway, your problem is that you are not allowing the labelWidget to get
an Expose event before you unmap the widget, so it never knows it is supposed
to draw the contents.  What you probably need to do is set a timer using
XtAddTimeOut rather than doing a sleep.  This way, you could have your function
return, and XtMainLoop would give the labelWidget a chance to draw its
contents.  Then, when the timeout occurs, you will have registered a function
to unmap the widget and everything will work out as you had intended.


John Diamant
Software Development Environments
Hewlett-Packard Co.		ARPA Internet: diamant@hpfclp.sde.hp.com
Fort Collins, CO		UUCP:  {hplabs,hpfcla}!hpfclp!diamant