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

Itay Brandes akari.il at gmail.com
Sun Jun 17 18:56:48 BST 2012

There is a possible bug when trying to use *QAxContainer.QAxWidget*, *
QtGui.QGraphicsOpacityEffect* and *QtCore.QPropertyAnimation* in the same

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 in
the same window.
The bug can be seen here:

A test case that causes the weird behavior is attached.

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