Procedure OnExit
OnExit is called after a cell focus change and is sent to the column object that has just lost the column focus. When called SelectedColumn is set to the new column focus object.
OnExiting is called before the cell navigation event has occurred. The OnExit event is sent after the navigation has occurred. OnEntering is called before the cell navigation event has occurred. The OnEntry event is sent after the navigation has occurred. They are called in the following order:
Get OnExiting of OldColumn to bCancel
Get OnEntering of NewColumn to bCancel
< Change focus>
Send OnExit of OldColumn
Send OnEntry of NewColumn