Loading NSView from NIB won't work

I have this code to load an NSView from a NIB and add it to another NSView:

// INIT
- (void)awakeFromNib {
  // Load nib
  DNListViewController *listViewController = [[DNListViewCont开发者_高级运维roller alloc] initWithNibName:@"ListView" bundle:nil];

  // Add view to window
  [listViewController.view setFrame:detailView.frame];
  [detailView addSubview:listViewController.view];

  // MEM
  [listViewController release];
}

All outlets are connected right, but nothing shows up. I don't understand why! Can someone help me? Thanks.

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This is about NSViews, not UIViews!

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Oh, I fixed it already. Nevermind, I'll let is stay here for people from the future.

[listViewController.view setFrame:detailView.frame];

must be

[listViewController.view setFrame:detailView.bounds];