Show Window without activating (keep application below it active)

I need to show a window (without title bar) above third party applications without my window taking focus.

I have tried using an

NSPanel

and setting enabling non-activating, but that didn't help.

I tried

orderFront:self

, but that didn't help either.

I always needed to add

[NSApp activateIgnoringOtherApps:YES];

because the window wouldn't show otherwise.

I have here a sample project for just this functionality:
http://users.telenet.be/prullen/TopW2.zip

UIElement

is set to

true

in the application's plist file, so there is no dock. You can activate the window by pressing

ALT + SPACE

at the same time. You will see that the app below it looses focus. Any thoughts on how to fix this? I've seen other apps do it so I know it's possible.

Edit: here's the code so far. Remember the window is a non-activating NSPanel. I still need that last

NSApp activateIgnoringOtherApps

line or otherwise it doesn't display. But of course that makes the window the active one.

 _windowController =[[MyWindowController alloc] initWithWindowNibName:@"MyWindowController"];

[[_windowController window] setLevel:NSNormalWindowLevel+1];

[[_windowController window] orderFrontRegardless];

[_windowController showWindow:self];

[NSApp activateIgnoringOtherApps:YES];

I've also subclassed NSPanel and added two methods:

-(BOOL)canBecomeKeyWindow {return NO;}
-(BOOL)canBecomeMainWindow {return NO;}

(I also tried canBecomeKeyWindow return YES and several other levels (for setLevel).

Any ideas?