public static extern bool ApplyDeltaA(long ApplyFlags, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpSourceName, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpDeltaName, [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPStr)] string lpTargetName);