[Qt-interest] QTreeView Wierdness with OS X Cocoa Qt 4.5.0

[Mike Jackson]

I have an application that uses a QTreeView with a custom TreeModel 
implementation. When I build against Qt 4.5 (Cocoa 32 Bit) the top few 
items do not seem to receive any mouse clicks. I can use the keyboard 
arrow key to highlight the top (root) item then use the arrow key again 
to reveal but it takes a few of these iterations to finally be able to 
let the mouse have any effect on the tree view (like showing and 
hiding) nodes.

  Has anyone else seen anything like this? When I recompile against a 
32 bit Qt 4.4.3 build (Carbon) the tree acts just fine.

I have not compiled against a carbon Qt 4.5 though to see if it is the 
Cocoa/Carbon thing or the 4.4 to 4.5 thing.

Any help would be appreciated.

Mike Jackson