Window management - what to do next?

[Vitaliy Margolen]

Ok, I've been digging this stuff for more then a week now. And I still don't
have even a partial understanding of what's going on in there. If someone please
explain me these:
1. Where wine stops and passing over to X/window manager? I'm most interested in
  handling focus changes, minimize/maximize/restore.
2. What are we doing about properly implementing minimize/maximize/restore.

Here is what I uncovered so far about SetWindowPos:
1. Wine does not send WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGED.
2. Wine does not redraw owner/owned windows (or not in a proper order) when
   z-order changes.

It looks like these heavily depend on focus changes and owner/owned windows
relations. Some times native redraws both owner and owned windows. Sometimes
none at all. Same goes for messages.

I'm kind of stuck here. To go any further I need to know what part should we
delegate to WM and what part do ourselves.

-- 
Best regards,
 Vitaliy