public static extern bool CreateDeltaA(long FileTypeSet, long SetFlags, long ResetFlags, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpSourceName, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpTargetName, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpSourceOptionsName, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpTargetOptionsName, DELTA_INPUT GlobalOptions, [InAttribute()] System.IntPtr lpTargetFileTime, uint HashAlgId, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpDeltaName);