Francois Gouget : user32: Handle WM_ENDSESSION in DefWinProc().

[Rein Klazes]

On Fri, 24 Feb 2006 14:29:45 -0600, you wrote:


>Author: Francois Gouget <fgouget at codeweavers.com>
>Date:   Fri Feb 24 15:34:09 2006 +0100
>
>user32: Handle WM_ENDSESSION in DefWinProc().
>DefWinProc() should call PostQuitMessage() on WM_ENDSESSION if the
>shutdown is proceeding.

Hi Francois,

This patch is causing a problem in Pegasus Mail. Closing some dialogs
cause termination of the complete program.
Here is a part of SPY++ log when run under win2000, when I close the
edit new mail dialog:

|<00202> 00130A82 S ..........................WM_SYSCOMMAND uCmdType:SC_CLOSE xPos:672 yPos:121 [wParam:0000F060 lParam:007902A0]
|<00203> 00130A82 S ...........................WM_CLOSE wParam:00000000 lParam:00000000
|<00204> 00130A82 S ............................WM_QUERYENDSESSION nSource:1 (End Task from Task List dialog) [wParam:00000001 lParam:00000000]
|<00951> 00130A82 R ............................WM_QUERYENDSESSION fShutdownIsOk:True [lResult:00000001]
...
|<00952> 00130A82 S ............................WM_ENDSESSION fEndSession:True [wParam:00000001 lParam:00000000]
|<00953> 00130A82 R ............................WM_ENDSESSION lResult:00000000

The WM_QUERYENDSESSION and WM_ENDSESSION are sent by the program:

|0009:Call user32.SendMessageA(00030024,00000011,00000001,00000000) ret=0040641d

How did you check the behavior of the Windows DefWindowProc? If I put a
DefWindowProc(hwnd, WM_ENDSESSION, 1, 0); some where in a windows
program nothing happens, while a PostQuitMesage certainly closes the
app.

Rein.