pinvoke.net: Edit: advapi32.LsaFreeMemory

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Summary: The LsaFreeMemory function frees memory allocated for an output buffer by an LSA function call.

!!!!C# Signature:
 [System.Runtime.InteropServices.DllImport("advapi32.dll", SetLastError=true)]
 private static extern uint LsaFreeMemory(System.IntPtr pBuffer);
!!!!VB Signature:
    Private Declare Function LsaFreeMemory Lib "advapi32.dll" ( _
        ByVal Buffer As IntPtr _
    ) As Integer
!!!!User-Defined Types:
None.

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

!!!!Notes:
    'NTSTATUS LsaFreeMemory(
    '  PVOID Buffer
    ');

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
 // You should already have the HPolicy and SID ready 
 IntPtr rightsPtr;
 uint countOfRights;
 LsaEnumerateAccountRights(HPolicy, SID, out rightsPtr, out countOfRights);
 try
 {
    IntPtr ptr = rightsPtr;
    LSA_UNICODE_STRING userRight;
    for (int i = 0; i < countOfRights; i++)
    {
       userRight = (LSA_UNICODE_STRING)Marshal.PtrToStructure(ptr, typeof(LSA_UNICODE_STRING));
       String userRightStr = Marshal.PtrToStringAuto(userRight.Buffer);
       Console.WriteLine("Another Privilege found: " + userRightStr);
       ptr = (IntPtr)((Int32)ptr + Marshal.SizeOf(userRight));
    }
 }
 finally
 {
    LsaFreeMemory(rightsPtr);
 }

Documentation: LsaFreeMemory@msdn on MSDN