[Mono-bugs] [Bug 503935] New: Certain keystrokes sent to a MessageBox will crash the application

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Thu May 14 11:59:35 EDT 2009


           Summary: Certain keystrokes sent to a MessageBox will crash the
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.4.x
          Platform: x86
        OS/Version: openSUSE 11.1
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: bgmerrell at novell.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: Integration Test

Description of Problem:

After opening a default MessageBox, which only has an "OK" button, pressing
"i", "a", or "n" (or these same letters in caps) on the keyboard will crash the

Steps to reproduce the problem:

1.  Run the attached test case IronPython application
2.  Click File -> Open
3.  Press "i", "a", or "n" on the keyboard

Actual Results:

The application crashes. (See attached stack trace.)

Expected Results:

The application should ignore the keystrokes

How often does this happen? 

Every time

Additional Information:

It looks like there is some logic in the ProcessDialogChar method in
mcs/class/Managed.Windows.Forms/System.Windows.Forms/MessageBox.cs that is
trying to handle the keystrokes, but it is resulting in a

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