传回字串，表示已知漫游使用者组态档的路径。
Returns a string representing the path to the known roaming user configuration file.
漫游存放区与具有漫游使用者设定档的使用者一起移动。
Roaming stores move with a user that has a roaming user profile.
传回值，指出组态档路径是否与目前已知漫游使用者的组态档路径相同。
Returns a value indicating whether a configuration file path is the same as the configuration file path for the currently known roaming user.
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