Create a new method on WinAPI class: static int setWindowLong (HWND _HWND, int _nIndex, int _dwNewLong) { DLL DLL; DLLFunction DLLFunction; ; DLL = new DLL(#UserDLL); DLLFunction = new DLLFunction(DLL, ' SetWindowLongA ' ); DLLFunction.arg(ExtTypes::DWord, ExtTypes::DWord, ExtTypes::DWord); DLLFunction...