Question

Lion support full screen app in the separate space. And It’s cool to slide the space by gusture.

But I don’t know how to make it for my own app.

Answer 1

There are two ways to get your window to have the fullscreen button in the corner.

[[NSApplication sharedApplication] setPresentationOptions:NSFullScreenWindowMask];

and

[window setCollectionBehavior: NSWindowCollectionBehaviorFullScreenPrimary];

I wrote a bit more about it in a blog post here