private void HandleKeyPressEvent (object obj, KeyPressEventArgs args, int direction)
		{
			if (direction = 1) {
        			AdjustVolume(1);
		
    			} 
			else if (direction = -1) {
				AdjustVolume(-1);

    			}
		}
		private void OnPlusKeyPressEvent (object obj, KeyPressEventArgs args)
		{
			HandleKeyPressEvent ( Gdk.Key.Return, 1);
		}

		private void OnMinusKeyPressEvent (object obj, KeyPressEventArgs args)
		{
			HandleKeyPressEvent (Gdk.Key.Return, -1);
		}