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

[Rein Klazes]

On Fri, 24 Feb 2006 14:29:45 -0600, you wrote:
> Author: Francois Gouget 
> 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.

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

[Francois Gouget]

Hi,

Rein Klazes wrote:
[...]
> 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

It's pretty weird that the application is sending a 
WM_QUERYENDSESSION/WM_ENDSESSION to itself.
> 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.

I used a modified poppad sample app from Petzold and used Spy++ to check 
that a WM_ENDSESSION caused the app to exit eventhough that 
application's main loop did not contain any special handling for 
WM_ENDSESSION.

So, since the decision to exit on WM_ENDSESSION is not made in the 
application's main loop I placed it in the DefWindowProc. But I must 
have gotten some detail wrong. Unfortunately I'm away from my computer 
for the next week, so I can't investigate right now.

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

[James E. Lang]

Francois Gouget wrote at 0:06 on 12 Mar 2006:
> Rein Klazes wrote:
> [...]
> > This patch is causing a problem in Pegasus Mail. Closing some dialogs
> > cause termination of the complete program.

[...]

I see that this is still a problem in 0.9.10 so I've fallen back again to 
0.9.8.

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

[James E. Lang]

Pardon intrusion by this Wine user into this technical discussion.

Is the problem with Pegasus Mail (PM) that is mentioned below something that is 
new with Wine 0.9.9? I know that I saw termination of "the complete program" 
whenever I sent a message using PM 4.31 and Wine 0.9.9. As a result I've 
reverted to Wine 0.9.8 and have none of this.

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

[Rein Klazes]

On Sat, 11 Mar 2006 19:23:14 -0800, you wrote:
> Pardon intrusion by this Wine user into this technical discussion.
>
> Is the problem with Pegasus Mail (PM) that is mentioned below something that is 
> new with Wine 0.9.9? I know that I saw termination of "the complete program" 
> whenever I sent a message using PM 4.31 and Wine 0.9.9. As a result I've 
> reverted to Wine 0.9.8 and have none of this.

You do not even have to send the message, just closing the compose new
message window is enough. Yes, it is new in 0.9.9.

Rein.