GetChildren is called by the streaming system that loads and saves components. Applications seldom need to call this routine. 

GetChildren executes the callback specified by the Proc parameter for every child control listed by the Controls property. 

Override GetChildren to limit or augment which child controls are saved with the control. When overriding GetChildren, call the procedure passed as the Proc parameter for every child control that should be saved. 

The Proc parameter defines the callback. 

The Root parameter is ignored.