C# Definition:

[StructLayout(LayoutKind.Sequential)]
struct ACL_SIZE_INFORMATION
{
     public uint AceCount;
     public uint AclBytesInUse;
     public uint AclBytesFree;
}

VB Definition:

Structure ACL_SIZE_INFORMATION
   Public TODO
End Structure

User-Defined Field Types:

None.

Notes:

Pass ACL_INFORMATION_CLASS.AclSizeInformation to GetAclInformation to fill this struct.