Macosx NSPopUpButton

和NSComBox相比nspopupbutton还是比较简单的，只需要设置titles即可

- (void)viewDidLoad {

[super viewDidLoad];

[groupPB removeAllItems];

[groupPB addItemsWithTitles:[NSArray arrayWithObjects:@"abc",@"cdb",@"13d3d", nil]];

// Do any additional setup after loading the view.

}

//=================================

-(IBAction) groupSelect:(id)sender

{

NSLog(@"%@",[[groupPB selectedItem] title]);

}