WineX11.drv: Add an X11 window for the client area [attempt2]

[Chris Robinson]

On Tuesday 18 December 2007 01:52:11 am Roderick Colenbrander wrote:
> > This is an updated version of the previous patch. It contains the
> > following changes:
> > - the client window is set to the whole window in case of the desktop

I think you also need to set the desktop hwnd's client_window_prop too, so 
GetDC and friends will get the right window when not using the DCX_WINDOW 
flag.

> > - the client window is destroyed in SetParent together with the other X11
> > windows

In the case of data->whole_window == data->client_window, you should probably 
make sure the client_window (and it's prop) are both set back to 0, too.