Hi,

I am attempting to use APIs via vb.net to view and ultimately modify
file permissions. I made it part way and got stuck. I am able to use
GetExplicitEntriesFromAcl and get the number of ACEs, but I can not
find a way to get at the individual ACEs in the returned array.

Here is a snippet of the code:

<DllImport("Advapi32.DLL", CharSet:=CharSet.Auto, SetLastError:=True)>
_
Public Shared Function GetExplicitEntriesFromAcl( _
  ByVal pacl As IntPtr, _
  ByRef pcCountOfExplicitEntries As UInt32, _
  ByRef pListOfExplicitEntries() As EXPLICIT_ACCESS) As Int32
End Function

<StructLayout(LayoutKind.Sequential, Pack:=1)> _
Public Structure EXPLICIT_ACCESS
  Public grfAccessPermissions As UInt32
  Public grfAccessMode As ACCESS_MODE
  Public grfInheritance As UInt32
  Public Trustee As TRUSTEE
End Structure

<StructLayout(LayoutKind.Sequential, Pack:=1)> _
Public Structure TRUSTEE
  Public pMultipleTrustee As IntPtr
  Public MultipleTrusteeOperation As MULTIPLE_TRUSTEE_OPERATION
  Public TrusteeForm As TRUSTEE_FORM
  Public TrusteeType As TRUSTEE_TYPE
  Public ptstrName As String
End Structure

Dim nACE As UInt32
Dim ACEs() As EXPLICIT_ACCESS
Dim ACE As EXPLICIT_ACCESS

' Obtain the array of ACEs from the DACL.
ACECount = Convert.ToUInt32(0)
Result = GetExplicitEntriesFromAcl(DACL, _
    nACE, _
    ACEs)

In my program nACE returns the correct number for the file I am
testing. I can add and subtract users and groups from the Explorer
interface and this number increases and decreases as expected.
However, I can not figure out how to get information from an
individual ACE in the ACEs array. What do I do now?

Thanks,
Dave