Native IOS Gui :: Landscape modus failure

I was wondering wether anyone could help me with fixing this:
I’ve selected “landscape” modus in my .xib file, yet my sliders and text remain in “default” modus…

(The other stuff in my app appears in landscape modus, as intended)

GRTZ

Still not sure how to fix this properly… I’ve found a “dirty” workaround however:

-(void)viewDidLoad {
myApp = (ofApp*)ofGetAppPtr();
// bad bad bad… don’t do this.
self.view.transform = CGAffineTransformMakeRotation(M_PI/2);
}

Positioned in my “nativeGui.mm” file (the one corresponding to the .xib)
Reference: http://goo.gl/NA2u5b