[Mono-bugs] [Bug 671530] New: NativeWindow.ReleaseHandle is not called when a window is destroyed

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=671530

https://bugzilla.novell.com/show_bug.cgi?id=671530#c0


           Summary: NativeWindow.ReleaseHandle is not called when a window
                    is destroyed
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.8.x
          Platform: All
        OS/Version: Windows
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: alexandre_mutel at yahoo.fr
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b11) Gecko/20100101
Firefox/4.0b11

When the window behind a NativeWindow is closed, the ReleaseHandle is not
called.

>From MSDN documentation, "A window automatically calls the method if it
receives a native Win32 WM_NCDESTROY message, indicating that Windows has
destroyed the handle". (source:
http://msdn.microsoft.com/en-us/library/system.windows.forms.nativewindow.releasehandle.aspx)

Reproducible: Always

Steps to Reproduce:
1. Create a derivative class from NativeWindow implementing DestroyHandle
2. Create a Windows.Form and pass the handle to the MyNativeWindow
3. Show the form and close it

Actual Results:  
=> NativeWindow.DestroyHandle is not called

Expected Results:  
NativeWindow.DestroyHandle should be called

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