[Interest] speeding up QListView scrolling

Hamish Moffatt hamish at risingsoftware.com
Thu Aug 22 04:58:52 CEST 2013

I'm using a QListWidget in an embedded application and I'm finding it 
quite slow to scroll. There's not many items on the list, but it is in a 
custom QWidget with a translucent background displayed over the top of 
some other widgets (all of which are static and not animated or anything).

Another QListWidget which isn't part of a pop-up translucent widget 
performs somewhat better. Same for another QScrollArea I have containing 
some more custom widgets.

Are there any tricks for speeding it up? I don't know anything about 
OpenGL or the graphics framework but I read some suggestion that it 
could help. This - 
http://lists.qt.nokia.com/public/qt-interest/2010-February/019575.html - 
suggests the QAbstractScrollArea viewport can be set to a QGLWidget, but 
all I got was a flickering mess.



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