What could cause overriding WndProc and ProcessCmdKey ACCESS

Try this. It's for the ProcessCmdKey.

transfer.dmsi.com/.../protrace.17728

It's a form embedded inside a flyout pane (I've seen the error from just a standalone window too). No dialog-boxes or input-blocking code is called along the method (ItemLocator_TextBoxLeave) call stack.

METHOD PROTECTED OVERRIDE LOGICAL ProcessCmdKey( INPUT-OUTPUT msg AS CLASS System.Windows.Forms.Message, INPUT keyData AS CLASS System.Windows.Forms.Keys ):

   glFromTab = Progress.Util.EnumHelper:AreEqual(keyData, System.Windows.Forms.Keys:Tab).

   IF glFromTab                            AND

      THIS-OBJECT:ByPassTabOnAutoLaunch    AND

      (gcOrigItem <> THIS-OBJECT:EditorText OR

      (gcOrigItem = "" AND THIS-OBJECT:EditorText = "")) THEN /* allow handling tabbing when the item is blank */

   DO:

     ItemLocator_TextBoxLeave( ?, ? ). /* parent container will be responsible for handling TAB destination */

     RETURN TRUE. /* processed */

   END.

   ELSE

     RETURN SUPER:ProcessCmdKey(msg, keyData).

END METHOD.

Joseph,

Adding INPUT-OUTPUT to the parameter when you call the SUPER in WndProc is also needed (assuming that it isn't there).

Brian

Thanks, I'll try that one.

I put in placed your suggested change, but today (after 3 months), we just hit another ACCESS-VIOLATION error.