code: def show_popup_menu(self, pos):
          '''show a popup menu'''
          self.popup_pos = self.image_coordinates(pos)
          self.frame.PopupMenu(self.wx_popup_menu, posf show_popup_menu(self, pos):
          '''show a popup menu'''
          self.popup_pos = self.image_coordinates(pos)
          self.frame.PopupMenu(self.wx_popup_menu, pos)
docs: show a popup menu