You need to roll your own for UIWindow.
Listen for UIApplicationDidChangeStatusBarFrameNotification notifications, and then set the the transform when the status bar changes.
You can read the current orientation from -[UIApplication statusBarOrientation], and calculate the transform like this:
#define DegreesToRadians(degrees) (degrees * M_PI / 180)
- (CGAffineTransform)transformForOrientation:(UIInterfaceOrientation)orientation {
switch (orientation) {
case UIInterfaceOrientationLandscapeLeft:
return CGAffineTransformMakeRotation(-DegreesToRadians(90));
case UIInterfaceOrientationLandscapeRight:
return CGAffineTransformMakeRotation(DegreesToRadians(90));
case UIInterfaceOrientationPortraitUpsideDown:
return CGAffineTransformMakeRotation(DegreesToRadians(180));
case UIInterfaceOrientationPortrait:
default:
return CGAffineTransformMakeRotation(DegreesToRadians(0));
}
}
- (void)statusBarDidChangeFrame:(NSNotification *)notification {
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
[self setTransform:[self transformForOrientation:orientation]];
}
Depending on your window´s size you might need to update the frame as well.