docs: def showPanelMenu(self, panel, point=None):
          """
          Creates the panel menu for this view widget.  If no point is supplied,\
          then the current cursor position will be used.
          
          :param      panel   | <XViewPanel>
                      point   | <QPoint> || None
          """
          if not self._panelMenu:
              self._panelMenu = XViewPanelMenu(self)
          
          if point is None:
              point = QtGui.QCursor.pos()
          
          self._panelMenu.setCurrentPanel(panel)
          self._panelMenu.exec_(point)