Add proper prototypes for GetClassLongPtrA/W for _WIN64 case.
diff --git a/include/winuser.h b/include/winuser.h
index 078efc9..11906c7 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -4140,8 +4140,13 @@
LONG WINAPI GetClassLongA(HWND,INT);
LONG WINAPI GetClassLongW(HWND,INT);
#define GetClassLong WINELIB_NAME_AW(GetClassLong)
+#ifdef _WIN64
+LONG_PTR WINAPI GetClassLongPtrA(HWND,INT);
+LONG_PTR WINAPI GetClassLongPtrW(HWND,INT);
+#else
#define GetClassLongPtrA GetClassLongA
#define GetClassLongPtrW GetClassLongW
+#endif
#define GetClassLongPtr WINELIB_NAME_AW(GetClassLongPtr)
INT WINAPI GetClassNameA(HWND,LPSTR,INT);
INT WINAPI GetClassNameW(HWND,LPWSTR,INT);