NtLoadKeyEx - NtDoc

#ifndef _NTREGAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
NtLoadKeyEx(
    _In_ POBJECT_ATTRIBUTES TargetKey,
    _In_ POBJECT_ATTRIBUTES SourceFile,
    _In_ ULONG Flags,
    _In_opt_ HANDLE TrustClassKey, // this and below were added on Win10
    _In_opt_ HANDLE Event,
    _In_opt_ ACCESS_MASK DesiredAccess,
    _Out_opt_ PHANDLE RootHandle,
    _Reserved_ PVOID Reserved // previously PIO_STATUS_BLOCK
    );

#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwLoadKeyEx(
    _In_ POBJECT_ATTRIBUTES TargetKey,
    _In_ POBJECT_ATTRIBUTES SourceFile,
    _In_ ULONG Flags,
    _In_opt_ HANDLE TrustClassKey, // this and below were added on Win10
    _In_opt_ HANDLE Event,
    _In_opt_ ACCESS_MASK DesiredAccess,
    _Out_opt_ PHANDLE RootHandle,
    _Reserved_ PVOID Reserved // previously PIO_STATUS_BLOCK
    );

#endif
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