Qt之QPropertyAnimation&QEasingCurve

QPushButton *btn = new QPushButton("Button", this);
    btn->setGeometry(10, 10, 100, 30);

    QPropertyAnimation *animation;
    animation = new QPropertyAnimation(btn, "geometry", this);

    animation->setDuration(3000);//從起始座標到結束座標的時長[單位ms]3s，默認250ms
    animation->setStartValue(QRect(10, 10, 100, 30));  //設置起始座標
    animation->setEndValue(QRect(200, 150, 100, 30));  //結束座標，當座標值改變時，會發生valueChanged信號事件

    animation->start();