--- np2/win9xc/dialog/d_screen.cpp	2005/03/20 08:58:20	1.5
+++ np2/win9xc/dialog/d_screen.cpp	2011/02/15 00:51:51	1.6
@@ -258,7 +258,11 @@ void dialog_scropt(HWND hWnd) {
 	PROPSHEETHEADER	psh;
 	HPROPSHEETPAGE	hpsp[3];
 
-	hinst = (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE);
+#if defined(_WIN64)
+	hinst = reinterpret_cast<HINSTANCE>(::GetWindowLongPtr(hWnd, GWLP_HINSTANCE));
+#else
+	hinst = reinterpret_cast<HINSTANCE>(::GetWindowLong(hWnd, GWL_HINSTANCE));
+#endif
 
 	ZeroMemory(&psp, sizeof(psp));
 	psp.dwSize = sizeof(PROPSHEETPAGE);