[wxOSX_Cocoa] Dynamic resize of wxAuiToolBar controls

[WaZZu]

Hello,

Can anybody instruct me how to dynamically resize controls within wxAuiToolBar?

So far, I've tried to catch OnSize event in the main frame, and set the size of the text control accordingly.
But, text control doesn't get resized.

wxAuiManager::Update or any other refresh methods do not help.

Using wxOSX_Cocoa 2.9.0 on MacOS X 10.5.4
Thanks, any help is highly appreciated.