* Jon TURNEY schrieb:

> Possibly this is a bug with the mapping of the X windows decoration hints into
> a native Windows window style.
> 
> Can you install 'xprop', and show the output you get from running that, then
> clicking on the window which doesn't get decorated and sized correctly?

See xprop as appending:
gwenview_parent_window.txt
gwenview_child_window.txt
child_window.txt
parent_window.txt

gwenview windows are working, "mother" and child window. 

but not child_window.txt. 

> 
> (The cygwin DLL version number (1.7.17) is independent of the X server version
> number, so doesn't really help here.  The X server version number which it
> works correctly with would be more informative)
I'll find it out, at the moment the PCs are in use.

> Are you are comparing with the last free version of Xming (6.9.0.31), or a
> more recent version?
yes, last free version 6.9.0.31 
A newer non-free Version 7.5.x  works fine, too

thx
Eckard