更新时间:2022-06-01 02:39:24
PRESENCE_PROP_AVAILABILITY属性只能设置为其中一个值,根据以下页面 http://msdn.microsoft.com/en-us/library/bb787249.aspx
The PRESENCE_PROP_AVAILABILITY property can only be set to one of these values, according to the following page http://msdn.microsoft.com/en-us/library/bb787249.aspx