Path: utzoo!attcan!uunet!wuarchive!wugate!wuibc!andrew
From: andrew@wuibc.UUCP (Andrew Loth)
Newsgroups: comp.windows.x
Subject: Re: Questions on popups.
Message-ID: <368@wuibc.UUCP>
Date: 26 Aug 89 18:16:40 GMT
References: <Aug.17.10.40.38.1989.21192@aramis.rutgers.edu> <8908241900.AA29986@expo.lcs.mit.edu>
Sender: andrew@wuibc (Andrew Loth)
Reply-To: andrew@wuibc.UUCP (Andrew Loth)
Organization: Washington University in St. Louis
Lines: 34

In article <8908241900.AA29986@expo.lcs.mit.edu> kit@EXPO.LCS.MIT.EDU (Chris D. Peterson) writes:
>
>
>> "X Toolkit Warning: Pop-up menu creation is only supported on ButtonPress or
>> EnterNotify events."
>>         What does this mean?
>
>It means that popuping up your menus using MenuPopup() is not supported
>on an enter-window event.  You must use a button or keypress event with
>menu popup.  It looks like the error message is incorrect.
>
>						Chris D. Peterson     
>						MIT X Consortium 

According to the documentation (X Toolkit Intrinsics - C Language Interface, 
section 5.4) MenuPopup IS supported on EnterWindow events:

	If MenuPopup is invoked on EnterWindow ( possibly with modifiers ),
	the translation manager pops up the shell wqith grab_kind set to
	XtGrabNonexclusive and spring_loaded set to False. Otherwise, the
	translation managergenerates an error.

The action procedure in TMstate.c appears to do what the documentation says.
This warning message is caused  by a problem in the _XtRegisterGrabs procedure
in TMstate.c, which is called during the initialization of widgets.  This
doesn't prevent the action from working, it only prints out the warning and
continues as if nothing wrong happened (which is the case).  You can get 
rid of this warning by adding a 'case EnterNotify: break;' line to the end of
the switch statement in _XtRegisterGrabs (before the 'default:').

Andrew T. Loth		andrew@wubcl.wustl.edu
Biomedical Computer Laboratory
Institute For Biomedical Computing
Washington University, St. Louis, MO