objective-c - Mac状态栏如何显示自定义View

Question

Mac状态栏如何显示自定义View，就像Mac QQ那样显示一个Popover，或者像某些系统监测软件的View

Answer 1

I just wrote a function like this recently. Does anyone else want to know the answer? If so, I will sort it out and post it when I have time