def wait(self, wait_for, timeout=None, retry_interval=None):
        """
        等待窗口处于特定的状态

             * ‘exists‘ 表示窗口是一个有效的句柄
             * ‘visible‘ 表示窗口不隐藏
             * ‘enabled‘ 表示该窗口未被禁用
             * ‘ready‘ 表示窗口可见并已启用
             * ‘active‘ 表示窗口处于活动状态
    timeout：表示超时
   retry_interval：表示重试间隔
        """
        check_method_names, timeout, retry_interval = self.__parse_wait_args(wait_for, timeout, retry_interval)
        wait_until(timeout, retry_interval,
                   lambda: self.__check_all_conditions(check_method_names, retry_interval))

        # Return the wrapped control
        return self.wrapper_object()    

    def wait_not(self, wait_for_not, timeout=None, retry_interval=None):
        """
        Wait for the window to not be in a particular state/states.

        :param wait_for_not: The state to wait for the window to not be in. It can be any
            of the following states, also you may combine the states by space key.

             * ‘exists‘ means that the window is a valid handle
             * ‘visible‘ means that the window is not hidden
             * ‘enabled‘ means that the window is not disabled
             * ‘ready‘ means that the window is visible and enabled
             * ‘active‘ means that the window is active

        :param timeout: Raise an :func:`pywinauto.timings.TimeoutError` if the window is sill in the
            state after this number of seconds.
            Default: :py:attr:`pywinauto.timings.Timings.window_find_timeout`.

        :param retry_interval: How long to sleep between each retry.
            Default: :py:attr:`pywinauto.timings.Timings.window_find_retry`.

        An example to wait until the dialog is not ready, enabled or visible: ::

            self.Dlg.wait_not("enabled visible ready")

        .. seealso::
            :func:`WindowSpecification.wait()`

            :func:`pywinauto.timings.TimeoutError`
        """
        check_method_names, timeout, retry_interval =             self.__parse_wait_args(wait_for_not, timeout, retry_interval)
        wait_until(timeout, retry_interval,
                   lambda: not self.__check_all_conditions(check_method_names, retry_interval))