USER_THREAD_START_ROUTINE - NtDoc

#ifndef _NTPSAPI_H
//
// User processes and threads
//
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_WINDOWS_VISTA)

/**
 * A pointer to a user-defined function that serves as the starting routine for a new thread.
 *
 * @param ThreadParameter A pointer to a variable to be passed to the thread.
 * @return NTSTATUS Successful or errant status.
 */
typedef _Function_class_(USER_THREAD_START_ROUTINE)
NTSTATUS NTAPI USER_THREAD_START_ROUTINE(
    _In_ PVOID ThreadParameter
    );

#endif
#endif
#endif
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#ifndef _NTRTL_H

//
// Threads
//

typedef _Function_class_(USER_THREAD_START_ROUTINE)
NTSTATUS NTAPI USER_THREAD_START_ROUTINE(
    _In_ PVOID ThreadParameter
    );

#endif
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