WINSTATIONUSERTOKEN

#ifndef _WINSTA_H

// Retrieves the user's token in the session. Caller requires WINSTATION_ALL_ACCESS permission.
typedef struct _WINSTATIONUSERTOKEN
{
    HANDLE ProcessId;
    HANDLE ThreadId;
    HANDLE UserToken;
} WINSTATIONUSERTOKEN, *PWINSTATIONUSERTOKEN;

#endif
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This type is documented in the [MS-TSTS] specification.