Method cancel

pager_lib/tqdm/tk.py:153–160

`cancel_callback()` followed by `close()` when close/cancel buttons clicked.

(self)

                self._tk_window.update()

    def cancel(self):
        """
        `cancel_callback()` followed by `close()`
        when close/cancel buttons clicked.
        """
        if self._cancel_callback is not None:
            self._cancel_callback()
        self.close()

    def reset(self, total=None):
        """