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List:       kde-core-devel
Subject:    Re: ParentRelative
From:       Matthias Ettrich <ettrich () trolltech ! com>
Date:       2001-03-30 18:10:54
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On Friday 30 March 2001 19:23, Keith Packard wrote:
> On Monday 12 February 2001 18:22, Matthias Elter wrote:
> > If I set the background-pixmap attribute of a window to ParentRelative
> > (no matter directly or by using
> > QWidget::setBackgroundMode(X11ParentRelative) I would expect X to send me
> > Exposure events in case the windows position relative to the parent
> > changes. But it does not?!
>
> X doesn't send expose events in this case.  If you reconfigure the window
> you can call XClearArea to get it repainted.  If someone else reconfigures
> the window, you can catch the ConfigureNotify event and then call
> XClearArea.

Hmm.... I thought I'd tested that and _got_ exposures some time ago.... 
weird. Maybe that was simply because the window also changed size (not just 
position) and Qt issued an XClearArea on ConfigureNotify.

Matthias

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