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From: fbm@ptcburp.ptcbu.oz.au (Farrell McKay)
Newsgroups: comp.windows.x
Subject: Popup problems under twm, tvtwm but not mwm
Message-ID: <216@ptcburp.ptcbu.oz.au>
Date: 22 Nov 90 07:27:25 GMT
Organization: Pyramid Technology Corporation
Lines: 36


Is there anyone out there who can confirm or deny the following statement.??

The correct behaviour of APPLICATION_MODAL popup widgets is at least
partly dependent upon which window manager one uses.  Specifically,
these widgets do not behave correctly under twm, or tvtwm.  :-(

My X program is based on the Motif 1.0 widget set.  I am using an
XmMessageDialog widget to stop the application and report fatal errors,
but without stopping any other applications.

Under mwm everything works just fine and dandy.  Under twm or tvtwm, however,
the popup is visible to the window manager, its appearance does not stop
events from being dispatched to the rest of the application, it does not
get iconified along with the rest of the application, it can be lowered
beneath the application's outermost window, etc. etc.  It would seem that
twm treats the popup as a modeless (instead of modal) popup.

In the twm man page there is a little sentence tucked away which states:

	"DecorateTransients:     This variable indicates that transient
	windows (those containing a WM_TRANSIENT_FOR property) should
	have titlebars.  By default, transients are not reparented."
			 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I suspect this is the crux of the problem.  Can I change this default
behaviour?  If so, how?

For full compatibility, I am using the R3 version of Xlib and 1.0 release
of Motif libXt and libXm.

----
      -m-------  Farrell McKay,                   fbm@ptcburp.ptcbu.oz.au
    ---mmm-----  Pyramid Technology Aust.,        ...!munnari!ptcburp.oz!fbm
  -----mmmmm---  Research Park, Bond University,  +61 75 950256
-------mmmmmmm-  Gold Coast, Qld 4229, AUSTRALIA  +61 75 522475 FAX