[Mono-bugs] [Bug 477395] New: MaskedTextBox: Able to overwrite characters with L mask

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=477395


           Summary: MaskedTextBox: Able to overwrite characters with L
                    mask
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.4.x
          Platform: i686
        OS/Version: openSUSE 11.0
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: btaylor1 at novell.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Using a Mask of "LLLLLL", I can easily overwrite characters that I've already
written even when not in Overwrite mode.

Steps to reproduce:
1. Compile and run the attached sample.
2. Type "abc" in the MaskedTextBox
3. Move the cursor to the beginning of the field, either by clicking or
pressing the Home key.
4. Type "def".

Notice that the text is replaced instead of being added to.  This behavior is
inconsistent with Windows.

I'm observing this on mono-2-4 branch, r127291 and on Mono 1.9.1 also.

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