'宣言
 
Public Delegate Function ImageAndTextUIElement.MeasureStringDelegate( _
   ByVal  As Graphics, _
   ByVal  As Font, _
   ByVal  As StringFormat, _
   ByVal  As String _
) As Size
             
        
            
            public delegate Size ImageAndTextUIElement.MeasureStringDelegate( 
   Graphics ,
   Font ,
   StringFormat ,
   string 
)