[Mono-bugs] [Bug 513009] New: ScrollBar repaint issues (Windows only)

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Sat Jun 13 18:05:01 EDT 2009


           Summary: ScrollBar repaint issues (Windows only)
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.4.x
          Platform: All
        OS/Version: Windows XP
            Status: NEW
          Severity: Minor
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: stifu at free.fr
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---

Created an attachment (id=297967)
 --> (http://bugzilla.novell.com/attachment.cgi?id=297967)
Test case

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.1)
Gecko/20090612 Firefox/3.5 (.NET CLR 3.5.30729)

I've noticed repaint issues with scrollbars on Windows, and I managed to find
an easily reproducible one.

The test case is just composer of a Form with a VScrollBar to to its right. I
made the Form background black to make the issue more obvious. Following the
steps below, you'll see a flickering black square continuously move from bottom
to top, on the scrollbar.

Reproducible: Always

Steps to Reproduce:
1. Load the test case
2. Click the scrollbar on the right
3. Keep the control key pressed
Actual Results:  
The scrollbar will flicker, getting partially transparent, showing the black
Form underneath

Expected Results:  
Nothing happens

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