Path: utzoo!attcan!uunet!husc6!think!bloom-beacon!ZERMATT.LCS.MIT.EDU!RWS From: RWS@ZERMATT.LCS.MIT.EDU (Robert Scheifler) Newsgroups: comp.windows.x Subject: No VisibilityEvent upon iconification? Message-ID: <19880712155627.4.RWS@KILLINGTON.LCS.MIT.EDU> Date: 12 Jul 88 15:56:00 GMT References: <976@godot.radonc.unc.edu> Sender: daemon@bloom-beacon.MIT.EDU Organization: The Internet Lines: 15 Date: 12 Jul 88 13:50:29 GMT From: godot!sherouse@mcnc.org (George W. Sherouse) Windows which have selected VisibilityChangeMask do not receive events when obscured by iconification of self or parent. Right. This may rightfully be viewed as a protocol misfeature, but there you have it. You don't get a visibility event when you (or an ancestor) become unmapped. You do get an UnmapNotify even when you become unmapped, and it was (probably incorrectly) thought that this was sufficient. Existing reparenting window managers generally do not unmap the client window on iconification; there is discussion among window manager folk to change this, so that clients can reliably receive UnmapNotify events.