LdrGetProcedureAddress - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
#ifndef _NTLDR_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

NTSYSAPI
NTSTATUS
NTAPI
LdrGetProcedureAddress(
    _In_ PVOID DllHandle,
    _In_opt_ PCANSI_STRING ProcedureName,
    _In_opt_ ULONG ProcedureNumber,
    _Out_ PVOID *ProcedureAddress
    );

#endif
#endif

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NTinternals.net (undocumented.ntinternals.net)

FunctionName

Is optional, but you must declare one of FunctionName or Ordinal. In Microsoft concept, you should use both parameters,
for faster function implementation. But there's a bug in link.exe, and all ordinals in PE executables are wrong...

See also

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