Path: utzoo!attcan!uunet!cs.utexas.edu!usc!bloom-beacon!EXPO.LCS.MIT.EDU!kit
From: kit@EXPO.LCS.MIT.EDU (Chris D. Peterson)
Newsgroups: comp.windows.x
Subject: Re: Reparenting Widgets
Message-ID: <8907051728.AA19783@expo.lcs.mit.edu>
Date: 5 Jul 89 17:28:40 GMT
References: <12359@bloom-beacon.MIT.EDU>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 25


Reparenting widgets is not supported withing the toolkit.  By the time you 
produce all the correct semantics there is little or no advantage to
reparenting a widget over destroying it and creating a new one.  The
major problem that you will run into when reparenting widgets is that
the resource specifications for a widget are dependant upon its
position in the widget hierarchy, and when you reparent a widget it is
necessary to reload all of its resources and completely reinitialize
it.  This process is really 99% if what it takes to create a
new widget.  The situation becomes even more complex when the widget
has children, as you must reinitialize all of the children also. 
Because of these problems it was not considered useful or worthwile to
support reparenting widgets.  

> Is anyone thinking about adding an XtReparentWidget call in the next release
> of X toolkit?

Nope, for the reasons stated above.

						Chris D. Peterson     
						MIT X Consortium 

Net:	 kit@expo.lcs.mit.edu
Phone:   (617) 253 - 9608	
Address: MIT - Room NE43-213