[Mono-winforms-list] Non-client areas on X

Rolf Bjarne Kvinge rolflists at ya.com
Fri Mar 30 07:49:34 EDT 2007


Here is a rather big patch that fixes the broken non-client areas in X, and
since it involves quite a few changes in key areas I'd appreciate any
comments .

The first thing I found is that when sending a WM_NCCALCSIZE, we were
initializing the message with a proposed client area, while MS initializes
it to the entire window area and then they calculate the client area in
their DefWndProc. This got broken when Winforms handles WM_NCCALCSIZE
somewhere and doesn't send it to DefWndProc for further processing, in which
case the borders on X were calculated twice. This was hidden by the fact
that Hwnd.GetClientRectangle didn't calculate the borders correctly, but
when I fixed that very weird things started to happen (windows jumping
around when moving them for instance), so that's the reason for the rest of
the changes. Hopefully I didn't get completely lost in there :)

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