In the Paint sample application, this line is sensitive to ordering:
set f [layout := fill $ widget sw, clientSize := sz 300 300]
If clientSize is first, the application fails on startup with an error indicating an assertion that a height must be > 0.
(P:11591): Gtk-CRITICAL **: IA__gtk_window_resize: assertion 'height > 0' failed
I am using wxWidgets 3.0.1 and the latest wxHaskell.
Ticket moved from /p/wxhaskell/support-requests/3/