loading nib and obtaining ref to the nswindow, all in code

gistfile1.m

        NSMutableArray* topLevelObjs = [NSMutableArray array];
        NSDictionary* nameTable = [NSDictionary dictionaryWithObjectsAndKeys:self, NSNibOwner, topLevelObjs, NSNibTopLevelObjects, nil];
        if (![[NSBundle mainBundle] loadNibFile:@"bla" externalNameTable:nameTable withZone:nil]) {
            NSLog(@"trouble loading bla.xib");
            return;
        }
        for (id object in topLevelObjs) {
            if ([object isKindOfClass:[NSWindow class]]) {
                [object makeKeyAndOrderFront:nil];
                break;
            }
        }