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From: klee@wsl.dec.com (Ken Lee)
Newsgroups: comp.windows.x
Subject: Re: Help needed mixing Xlib & Athena widgets.
Message-ID: <1990Oct22.151528@wsl.dec.com>
Date: 22 Oct 90 22:15:28 GMT
References: <2436@dover.sps.mot.com>
Sender: news@wrl.dec.com (News)
Reply-To: klee@wsl.dec.com
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Organization: DEC Western Software Laboratory
Lines: 26

In article <2436@dover.sps.mot.com>, cowan@dover.sps.mot.com (Andrew H Cowan) writes:
|> When I try to create an Xlib "SimpleWindow" with the previously
|> create Athena Viewport widget as the parent I get this error:
|> 
|>    X Error of failed request:  BadWindow (invalid Window parameter)
|>      Major opcode of failed request:  1 (X_CreateWindow)
|>      Resource id in failed request:  0x0

If this isn't in the "frequently asked questions" list, it should be.
You are trying to access the XtWindow() of a widget that has not yet
been realized.  You must realize the window before using XtWindow().

A bigger problem you have is that mixing Xlib and X Toolkit windows
this way is a messy kludge.  You're much, much better off writing your
own widget to handle your Xlib graphics.  That way, all of the X
Toolkit event, resource, and geometry management facilities will be
available to help you, rather than get in your way.  Writing a widget
is no more complex than mixing Xlib with Xt.  Asente & Swick's book "X
Window System Tookit" contains an excelent tutorial on writing
widgets.

-- 
Ken Lee
DEC Western Software Laboratory, Palo Alto, Calif.
Internet: klee@wsl.dec.com
uucp: uunet!decwrl!klee