NSAlert

    NSAlert *alert = [[NSAlert alloc] init];
    alert.icon = nil;
    //增加一个按钮
    [alert addButtonWithTitle:@"OK"];//1000
    //提示的标题
    [alert setMessageText:@"标题"];
    //提示的详细内容
    [alert setInformativeText:@"内容"];
    //设置告警风格
    [alert setAlertStyle:NSAlertStyleInformational];

    //开始显示告警
    [alert beginSheetModalForWindow:self.win
                  completionHandler:^(NSModalResponse returnCode){
                      //用户点击告警上面的按钮后的回调
                      NSLog(@"returnCode : %d",returnCode);
                  }
     ];

https://blog.csdn.net/lovechris00/article/details/78024688