Regression in x11drv windows handling

[Maxime Bellengé]

I have one of my applications which no longer works correctly after this
patch :

ChangeSet ID:	15758
CVSROOT:	/opt/cvs-commit
Module name:	wine
Changes by:	julliard(a)wine.codeweavers.com	2005/01/28 11:25:50

Modified files:
	include        : win.h 
	dlls/x11drv    : x11drv.h winpos.c window.c event.c desktop.c 

Log message:
	Use an X context to associated the x11drv private window data to a
	window handle instead of accessing the WND structure directly.

Patch: http://cvs.winehq.org/patch.py?id=15758

The behavior is when I try to move a window (in unmanaged mode) a little, 
the window moves at the bottom right corner of my screen. If I try to move it 
again, it moves again further on the bottom right. So I can no longer see my window.

However every component in that windows works perfectly.

Maxime