code: def click_relative_self(self, x, y, button):
          
          self.interface.send_mouse_click_relative(x, y, button)
docs: Send a mouse click relative to the current mouse position
          
          Usage: C{mouse.click_relative_self(x, y, button)}
          
          @param x: x-offset in pixels, relative to current mouse position
          @param y: y-offset in pixels, relative to current mouse position
          @param button: mouse button to simulate (left=1, middle=2, right=3)