NtUserOpenWindowStation - NtDoc

#ifndef _NTUSER_H

/**
 * Opens the specified window station.
 *
 * @param ObjectAttributes The name of the window station to be opened. Window station names are case-insensitive. This window station must belong to the current session.
 * @param DesiredAccess The access to the window station.
 * @return Successful or errant status.
 */
NTSYSCALLAPI
HWINSTA
NTAPI
NtUserOpenWindowStation(
    _In_ OBJECT_ATTRIBUTES ObjectAttributes,
    _In_ ACCESS_MASK DesiredAccess
    );

#endif
View code on GitHub