connect(buttonDelete , SIGNAL(clicked()) , this , SLOT(slotDeleteFrame()));
connect(buttonAdd , SIGNAL(clicked()) , this , SLOT(slotAddFrame()));
connect(m_scene, SIGNAL(actionFinished()), this, SLOT(slotUpdateTransitionProperties()));
connect(buttonDelete , SIGNAL(clicked()) , this , SLOT(slotDeleteFrame()));
connect(buttonAdd , SIGNAL(clicked()) , this , SLOT(slotAddFrame()));
connect(m_scene, SIGNAL(actionFinished()), this, SLOT(slotUpdateTransitionProperties()));