1 files changed, 4 insertions, 6 deletions
diff --git a/include/engine.h b/include/engine.h
index 6a88154..6dbd990 100644
--- a/include/engine.h
+++ b/include/engine.h
@@ -15,20 +15,18 @@ namespace mogltk {
 	  public:
               keyevent();
               virtual ~keyevent();
-	    virtual void down(SDL_keysym);
-	    virtual void up(SDL_keysym);
+	    virtual void down(SDL_keysym) = 0;
+	    virtual void up(SDL_keysym) = 0;
           protected:
-            void passdown(SDL_keysym);
             keyevent * old_handler, * new_handler;
 	};
         class mouseevent : public Base {
           public:
               mouseevent();
               virtual ~mouseevent();
-            virtual void move(SDL_MouseMotionEvent);
-            virtual void action(SDL_MouseButtonEvent);
+            virtual void move(SDL_MouseMotionEvent) = 0;
+            virtual void action(SDL_MouseButtonEvent) = 0;
           protected:
-            void passdown(SDL_MouseMotionEvent);
             mouseevent * old_handler, * new_handler;
         };
         static int setup() throw(GeneralException);