[Mono-bugs] [Bug 371990] ComboBox: drop-down doesn't scroll when using arrow keys

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Wed Mar 26 05:54:23 EDT 2008


User andyhume32 at yahoo.co.uk added comment

Andy Hume <andyhume32 at yahoo.co.uk> changed:

           What    |Removed                                         |Added
             Status|RESOLVED                                        |REOPENED
         Resolution|FIXED                                           |

--- Comment #2 from Andy Hume <andyhume32 at yahoo.co.uk>  2008-03-26 03:54:23 MST ---
There's a wee regression. :-(  Wwhen the drop-down is closed any arrow-key
press causes a NRE.

Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object

at System.Windows.Forms.ComboBox.OnKeyDownCB
(object,System.Windows.Forms.KeyEventArgs) [0x000db]
at System.Windows.Forms.Control.OnKeyDown (System.Windows.Forms.KeyEventArgs)
at System.Windows.Forms.ComboBox.OnKeyDown (System.Windows.Forms.KeyEventArgs)
at System.Windows.Forms.Control.ProcessKeyEventArgs
(System.Windows.Forms.Message&) [0x0004a]
at System.Windows.Forms.ComboBox.ProcessKeyEventArgs
(System.Windows.Forms.Message&) [0x00000]
at System.Windows.Forms.Control.ProcessKeyMessage
(System.Windows.Forms.Message&) [0x0001e]
at System.Windows.Forms.Control.WmKeys (System.Windows.Forms.Message&)
at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message&)
at System.Windows.Forms.ComboBox.WndProc (System.Windows.Forms.Message&)
at ControlWindowTarget.OnMessage (System.Windows.Forms.Message&) [0x00000]
..trimmed and truncated...

Also, in DropDownList mode I've just noticed that Home and End keypresses
navigate to the first and last item respectively.  Do we want to support that
too?  (In the other styles they of course navigate within the text field).

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