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From: neilb@dcs.leeds.ac.UK (Neil Bowers)
Newsgroups: comp.windows.x
Subject: Re:  Help needed mixing Xlib & Athena widgets.
Message-ID: <2046.9010230841@csparc2.dcs.leeds.ac.uk>
Date: 23 Oct 90 08:41:53 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 41


You said:

> When I try to create an Xlib "SimpleWindow" with the previously
> created Athena Viewport widget as the parent I get this error:
	X Error of failed request:  BadWindow (invalid Window parameter)

Your code:
	..
	viewport = XtCreateManagedWidget(
			"viewport",
			boxWidgetClass,   <-- viewportWidgetClass ??
			... );
						<-------+
	win = XCreateSimpleWindow( .. );		|
	XMapWindow(XtDisplay(viewport),win);		|
	XtRealizeWidget(Toplevel);		--------+
	..

A widget's window is created when the widget is realized, rather than
when the widget is created. Realizing after you create the viewport
will get the thing to compile and run, but there is still a serious flaw.

The viewport widget will manage a single child *widget*, but not a window.
I would suggest you create your own widget which encapsulates the
functionality required for the window (see chapter 7 of the Xaw
doc on creating new widgets).

Hope this helps!

Neil

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= Neil Bowers,			JANET       : neilb@leeds.dcs		=
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