virtual void release() = 0;
virtual void onSizeChanged( int width, int height ) = 0;
virtual void onMouseDown( const WindowVector& position, ButtonIdentifier button, ModifierFlags modifiers ) = 0;
virtual void release() = 0;
virtual void onSizeChanged( int width, int height ) = 0;
virtual void onMouseDown( const WindowVector& position, ButtonIdentifier button, ModifierFlags modifiers ) = 0;