code: def __clear_inplace_widgets(self):
          
          cols = self.__get_display_columns()
          #print('Clear:', cols)
          for c in cols:
              if c in self._inplace_widgets:
                  widget = self._inplace_widgets[c]
                  widget.place_forget()
                  self._inplace_widgets_show.pop(c, None)
docs: Remove all inplace edit widgets.