|Can be called by
|The form's window becomes the frontmost window or the subform's container gets the focus
If the window of a form was sent to the background, this event is called when the window becomes the frontmost window.
This event applies to the form as a whole and not to a particular object. Consequently, if the
On Activate form event property is selected, only the form will have its form method called.
In the case of a subform, this event is passed to the subform when the container gets the focus (if it has the focusable property).