Protected Overrides Sub OnHeaderChanged( _
   ByVal oldHeader As Object, _
   ByVal newHeader As Object _
) 

Dim instance As ISHeaderedItemsControl
Dim oldHeader As Object
Dim newHeader As Object
 
instance.OnHeaderChanged(oldHeader, newHeader)

protected override void OnHeaderChanged( 
   object oldHeader,
   object newHeader
)

protected procedure OnHeaderChanged( 
    oldHeader: TObject;
    newHeader: TObject
); override; 

protected override function OnHeaderChanged( 
   oldHeader : Object,
   newHeader : Object
);

protected: void OnHeaderChanged( 
   Object* oldHeader,
   Object* newHeader
) override 

protected:
void OnHeaderChanged( 
   Object^ oldHeader,
   Object^ newHeader
) override