Question about the new window design

[Gerard Patel]

Since the patch of 4 June, all windows are created as X windows.

This makes one of my test apps to crash; it's creating a child window
in the WM_NCCREATE event handling of a window. When the 
child window is created, X bombs because the X window parent 
does not exist yet - Wine is trying to call XCreateWindow with 
parent = 0.

What is the best way of fixing this ?

Gerard