property MaskEdit.InsertMode as InsertModeEnum
Specifies the control's inserting mode that could be insert-type or over-type.

TypeDescription
InsertModeEnum An InsertModeEnum expression that specifies the insertion mode.
By default, the InsertMode property is exEditInsertMode. The InsertMode property specifies the control's insertion mode. Use the InsertMode property on exEditOvertypeMode to allow user to edit the control's field in overtype mode. The AllowToggleInsertMode property specifies whether the control toggles the insertion mode when the user presses the Insert key.