-bool OnLButtonDown( guint32 nFlags, double x, double y );
-bool OnMButtonDown( guint32 nFlags, double x, double y ) { return false; }
-bool OnRButtonDown( guint32 nFlags, double x, double y );
-bool OnLButtonUp( guint32 nFlags, double x, double y );
-bool OnMButtonUp( guint32 nFlags, double x, double y ) { return false; }
-bool OnRButtonUp( guint32 nFlags, double x, double y );
-bool OnMouseMove( guint32 nFlags, double x, double y );
-bool OnKeyPressed( char *s );
-bool Paint();
-void Close();
+ bool OnLButtonDown(guint32 nFlags, double x, double y);
+
+ bool OnMButtonDown(guint32 nFlags, double x, double y)
+ { return false; }
+
+ bool OnRButtonDown(guint32 nFlags, double x, double y);
+
+ bool OnLButtonUp(guint32 nFlags, double x, double y);
+
+ bool OnMButtonUp(guint32 nFlags, double x, double y)
+ { return false; }
+
+ bool OnRButtonUp(guint32 nFlags, double x, double y);
+
+ bool OnMouseMove(guint32 nFlags, double x, double y);
+
+ bool OnKeyPressed(char *s);
+
+ bool Paint();
+
+ void Close();