NSMenu

複数の選択肢を作るクラス？？

  NSMenuItem *menuItem01=[[NSMenuItem alloc]initWithTitle:@"item01"
                                                   action:@selector(actionA)
                                            keyEquivalent:@"1"];
  NSMenuItem *menuItem02=[[NSMenuItem alloc]initWithTitle:@"item02"
                                                   action:@selector(actionA)
                                            keyEquivalent:@"2"];
  
  NSMenu *menuA=[[NSMenu alloc]init];
  [menuA insertItem:menuItem01 atIndex:0];
  [menuA insertItem:menuItem02 atIndex:0];