base.py 文件源码

def run(self):
        '''Begin processing events, scheduled functions and window updates.

        This method returns when `has_exit` is set to True.

        Developers are discouraged from overriding this method, as the
        implementation is platform-specific.
        '''
        self.has_exit = False
        self._legacy_setup()

        platform_event_loop = app.platform_event_loop
        platform_event_loop.start()
        self.dispatch_event('on_enter')

        self.is_running = True
        if compat_platform == 'win32' and int(platform.win32_ver()[0]) <= 5:
            self._run_estimated()
        else:
            self._run()
        self.is_running = False

        self.dispatch_event('on_exit')
        platform_event_loop.stop()