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- Newsgroups: comp.windows.x
- Path: sparky!uunet!enterpoop.mit.edu!paperboy.osf.org!paperboy!drand
- From: drand@spinner.osf.org (Douglas S. Rand)
- Subject: Re: Widget Grabs
- In-Reply-To: alo@meadow.uucp's message of Mon, 11 Jan 93 16:23:26 GMT
- Message-ID: <DRAND.93Jan12174614@spinner.osf.org>
- Sender: news@osf.org (USENET News System)
- Organization: Open Software Foundation
- References: <1740@esl.ESL.COM> <141770007@hpcupt1.cup.hp.com>
- <1992Dec3.094912.24676@sol.ctr.columbia.edu>
- <1992Dec12.121026.5907@fct.unl.pt> <1993Jan11.162326.27272@meadow.uucp>
- Date: 12 Jan 93 17:46:14
- Lines: 22
-
- In article <1993Jan11.162326.27272@meadow.uucp> alo@meadow.uucp (Andrew Lo) writes:
-
- Hi! I'm a widget programmer. I have created a widget in which under certain
- circumstances I need the widget to grab all button presses for the entire
- screen. Thus far, I have achieved this by using XtGrabPointer followed by
- an XAllowEvents. I have an event handler for the widget that intercepts all
- the button press events at this time. This works.
- However, when I press a cascade button it takes the grab away from me without
- me calling XtUngrabPointer. How do I prevent this from happening.?
- Please email me directly.
-
- I don't believe you can prevent this. Grabs transfer if something else
- requests one. I do suggest that you consider why you are imposing
- a grab. Grabs should be used very sparingly, if at all, in
- normal widgets. The usual exceptions are modal behaviors such
- as popup or pulldown menus.
-
- --
- Douglas S. Rand <drand@osf.org> OSF/Motif Dev.
- Snail: 11 Cambridge Center, Cambridge, MA 02142
- Disclaimer: I don't know if OSF agrees with me... let's vote on it.
- Amateur Radio: KC1KJ
-