# 启动耗时事件

* **[启动耗时事件介绍](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/hiappevent-watcher-app-launch-event)**   
* **[订阅启动耗时事件（ArkTS）](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/hiappevent-watcher-app-launch-arkts)**   
* **[订阅启动耗时事件（C/C++）](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/hiappevent-watcher-app-launch-c)**