public static extern uint NtQueryMutant( [In] IntPtr MutantHandle, [In] MutantInformationClass MutantInformationClass, [Out] out MutantBasicInformation MutantInformation, [In] int MutantInformationLength, [Out][Optional] out int ReturnLength );
public static extern NtStatus NtQueryMutant( SafeKernelObjectHandle MutantHandle, MutantInformationClass MutantInformationClass, SafeBuffer MutantInformation, int MutantInformationLength, out int ResultLength);