code: def _showItemContextMenu(self, item, point, col):
          
          menu = getattr(item, '_menu', None)
          if menu:
              settitle = getattr(item, '_set_menu_title', None)
              if settitle:
                  settitle()
              # self._current_item tells callbacks what item the menu was referring to
              point = self.etw.mapToGlobal(point)
              self._current_item = item
              self.etw.clearSelection()
              self.etw.setItemSelected(item, True)
              menu.exec_(point)
          else:
              self._current_item = None
docs: Callback for contextMenuRequested() signal. Pops up item menu, if defined