如何实现系统气泡提示？

[oklai]

程序最小化后在后台运行，其中遇到一些情况需要向用户反馈，比如可以弹出个气泡告诉用户，如何实现类似的效果呢。
我现在想到的是用一个frameless窗口模拟实现，有没更好的实现方式，如调用系统API之类的。

[rogerwang]

Thanks for reporting. but please write it in English so people will know what you are saying.

[rogerwang]

And please use the mailing list rather than issues for questions, before it's confirmed to be a feature request or bug.