Listing 4 shows the request for the userinfo.

清单4显示对userinfo的请求。

This notification does not contain a userInfo dictionary.

这个消息不包含用户信息字典。

The UserInfo class controls and interacts with the user information database.

userinfo类控制用户信息数据库并与之进行交互。

The first line is the output of the Map object, and the second line is the UserInfo object reference.

第一行是map对象的输出，第二行是UserInfo对象引用。

The notification object is the window object that has become hidden. This notification does not contain a userInfo dictionary.

这个消息对象是当视窗对象变为隐藏时触发。这个消息不包含用户信息字典。