'宣言
 
Public Shared Sub DrawReversibleLine( _
   ByVal  As System.Windows.Forms.Control, _
   ByVal  As System.Drawing.Point, _
   ByVal  As System.Drawing.Point _
) 
             
        
            
            public static void DrawReversibleLine( 
   System.Windows.Forms.Control ,
   System.Drawing.Point ,
   System.Drawing.Point 
)