winex11: Create a dummy parent window for composite child windows to avoid using the root.

[Alexandre Julliard]

Chris Robinson <chris.kcat at gmail.com> writes:

> Alexandre Julliard wrote:
>> -        attrib.override_redirect = True;
>>          attrib.colormap = data->colormap;
>>          XInstallColormap(gdi_display, attrib.colormap);
>>
>>          if(data->gl_drawable) XDestroyWindow(gdi_display, 
> data->gl_drawable);
>> -        data->gl_drawable = XCreateWindow(gdi_display, parent, -w, 0, w, h, 
> 0,
>> +        data->gl_drawable = XCreateWindow(gdi_display, dummy_parent, -w, 0, 
> w, h, 0,
>>                                            vis->depth, InputOutput, 
> vis->visual,
>>                                            CWColormap | CWOverrideRedirect,
>>                                            &attrib);
>
> Did you mean to remove setting the override_redirect attribute? I remember 
> having some alignment issues without it (the GL rendering was offset on the 
> unseen window by the size of the decorations). But even if so, you'd need to 
> remove the CWOverrideRedirect flag, because it's now taking the setting from 
> the uninitialized override_redirect field.

It's not removed, just moved a little higher in the function so that it
can be used in both XCreateWindow calls.

-- 
Alexandre Julliard
julliard at winehq.org