WinStationEnumerateW - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _WINSTA_H

// Sessions

// rev
NTSYSAPI
BOOLEAN
NTAPI
WinStationEnumerateW(
    _In_opt_ HANDLE ServerHandle,
    _Out_ PSESSIONIDW *SessionIds,
    _Out_ PULONG Count
    );

#endif

View code on GitHub

This function is a wrapper over an RPC method documented in the [MS-TSTS] specification.