[PyQt] Possible bug with QtCore.QPropertyAnimation and QAxContainer.QAxWidget

Phil Thompson phil at riverbankcomputing.com
Wed Jun 20 15:48:37 BST 2012

On Sun, 17 Jun 2012 20:56:48 +0300, Itay Brandes <akari.il at gmail.com>
> There is a possible bug when trying to use *QAxContainer.QAxWidget*, *
> QtGui.QGraphicsOpacityEffect* and *QtCore.QPropertyAnimation* in the
> application.
> This happens when trying to animate a widget's opacity (creating a "fade
> out" effect).
> The animation won't update correctly if a QAxWidget is present somewhere
> the same window.
> The bug can be seen here:
> http://itayb.hostzi.com/eventloop_doesnt_update.avi
> A test case that causes the weird behavior is attached.
> Thanks!

It's difficult to see how this is a PyQt bug - particularly as the
animation of the geometry works fine. A C++ version of your test would show
if it was a Qt problem or not.


More information about the PyQt mailing list