Mac OS X - app without menu?

I'd like to build an app that does not have a menubar, a dock icon, or sits in the app switcher. Basically, it should be like Quicksilver: I'd active it through a global hot key, say from Safari, and a little window appears, but Safari does not get inactive, neither does a different menubar show. I hope you understand what I mean...

How would I do that? I can prevent the dock icon, the app switcher, but I do 开发者_C百科not know how I can prevent the other apps from becoming inactive when my app's window shows or how I can remove the menu.

Thanks for any hints!

Try searching for "LSUIElement". That should give you all the information you need.

(Specifically, this page in the documentation).

As Dave already said, add

LSUIElement  YES

in your application's Info.plist file. That will get rid of icon and menu bar.

Then, to actually bring a window to the front at the appropriate time (e.g. when triggered through a global keyboard shortcut), you could do something like this:

ProcessSerialNumber psn = {0, kCurrentProcess};
SetFrontProcess(&psn);

[someWindow makeKeyAndOrderFront:nil];