[Bug 59745] New: Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

            Bug ID: 59745
           Summary: Wine crashes when a custom window is created to show
                    information
           Product: Wine
           Version: 11.8
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 80922
  --> http://bugs.winehq.org/attachment.cgi?id=80922
Source code of the test program

I created a program using C and the Windows API. This program was designed to
create and display a specific window containing help text rendered via GDI. As
soon as the user pressed any key on the keyboard or clicked with the mouse, the
special window was supposed to be destroyed and the application terminated.
Since this program functioned flawlessly on Windows but crashed under Wine
immediately after displaying and destroying the special window, I developed a
small test program that demonstrates the bug. This test program logs to the
command line what occurs when the same task is executed in a simplified manner.

I have attached the source code for this tiny test program. You may copy,
modify and distribute it without restrictions to the extent permitted by law.

On the Debian 13 console, the console output is not the same as in the console
of Windows 11.

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #1 from Matthias Zorn <[e-mail]> ---
Created attachment 80923
  --> http://bugs.winehq.org/attachment.cgi?id=80923
Screenshot of Windows 11 console

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #2 from Matthias Zorn <[e-mail]> ---
Created attachment 80924
  --> http://bugs.winehq.org/attachment.cgi?id=80924
Screenshot of Debian 13 console

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

Matthias Zorn <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|-unknown                    |user32
       Distribution|---                         |Debian
           Keywords|                            |source

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #3 from Matthias Zorn <[e-mail]> ---
If I alter the source code and substitute all

DestroyWindow(hwnd);

with the text

SendMessageW(hwnd, WM_DESTROY, 0, 0);

and compile it, the compiled program will work fine both in Windows and in
Wine.

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

Matthias Zorn <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |testcase

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

Maotong Zhang <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #4 from Maotong Zhang <[e-mail]> ---
Created attachment 81241
  --> http://bugs.winehq.org/attachment.cgi?id=81241
skip no-op activation in activate_other_window.

Hello, could you please test this patch to see if it can solve this problem and
also check for any other potential impacts?

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #5 from Matthias Zorn <[e-mail]> ---
I’ve tested your bug fix with Wine 11.12. The program no longer crashes on
Linux. However, there is a slight difference in the console output, which can
be seen when comparing the screenshots.

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

Matthias Zorn <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #80923|0                           |1
        is obsolete|                            |

--- Comment #6 from Matthias Zorn <[e-mail]> ---
Created attachment 81291
  --> http://bugs.winehq.org/attachment.cgi?id=81291
Screenshot of the Windows 11 console

Screenshot of the Windows 11 console after using the first patch for Wine

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

Matthias Zorn <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #80924|0                           |1
        is obsolete|                            |

--- Comment #7 from Matthias Zorn <[e-mail]> ---
Created attachment 81292
  --> http://bugs.winehq.org/attachment.cgi?id=81292
Screenshot of Debian 13 console

Screenshot of the Debian 13 console after using the first patch for Wine

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #8 from Maotong Zhang <[e-mail]> ---
(In reply to Matthias Zorn from comment #5)
> I’ve tested your bug fix with Wine 11.12. The program no longer crashes on
> Linux. However, there is a slight difference in the console output, which
> can be seen when comparing the screenshots.

Would missing a WM_ACTIVATE message affect your “special window program”?

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #9 from Matthias Zorn <[e-mail]> ---
(In reply to Maotong Zhang from comment #8)
> (In reply to Matthias Zorn from comment #5)
> > I’ve tested your bug fix with Wine 11.12. The program no longer crashes on
> > Linux. However, there is a slight difference in the console output, which
> > can be seen when comparing the screenshots.
>
> Would missing a WM_ACTIVATE message affect your “special window program”?

The window can be closed in Debian just as it is in Windows 11. Exception: If
you click on the Debian taskbar (LXPanel 0.11.1), the Wine program will only
detect this if another window is brought to the foreground.

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #10 from Maotong Zhang <[e-mail]> ---
(In reply to Matthias Zorn from comment #9)
> (In reply to Maotong Zhang from comment #8)
> > (In reply to Matthias Zorn from comment #5)
> > > I’ve tested your bug fix with Wine 11.12. The program no longer crashes on
> > > Linux. However, there is a slight difference in the console output, which
> > > can be seen when comparing the screenshots.
> >
> > Would missing a WM_ACTIVATE message affect your “special window program”?
>
> The window can be closed in Debian just as it is in Windows 11. Exception:
> If you click on the Debian taskbar (LXPanel 0.11.1), the Wine program will
> only detect this if another window is brought to the foreground.

Without applying the patch, can the window be detected?

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[Bug 59745] Wine crashes when a custom window is created to show information

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59745

--- Comment #11 from Matthias Zorn <[e-mail]> ---
(In reply to Maotong Zhang from comment #10)
> (In reply to Matthias Zorn from comment #9)
> > (In reply to Maotong Zhang from comment #8)
> > > (In reply to Matthias Zorn from comment #5)
> > > > I’ve tested your bug fix with Wine 11.12. The program no longer crashes on
> > > > Linux. However, there is a slight difference in the console output, which
> > > > can be seen when comparing the screenshots.
> > >
> > > Would missing a WM_ACTIVATE message affect your “special window program”?
> >
> > The window can be closed in Debian just as it is in Windows 11. Exception:
> > If you click on the Debian taskbar (LXPanel 0.11.1), the Wine program will
> > only detect this if another window is brought to the foreground.
>
> Without applying the patch, can the window be detected?

Without the patch, the Wine program cannot recognize these mouse actions on the
Debian taskbar either.

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