void PlayLabel::wheelEvent(QWheelEvent *event)
{
if(m_bSelected)
{
int numDegrees = event->delta() / 8;//滚动的角度，*8就是鼠标滚动的距离
int numSteps = numDegrees / 15;//滚动的步数，*15就是鼠标滚动的角度
if(numSteps < 0)
{
qDebug()<<"steps is zoomout "<<numSteps<<",label id is "<<m_iResID;
onBtZoomOutClicked();
}
if(numSteps > 0)
{
qDebug()<<"steps is zoomin "<<numSteps<<",label id is "<<m_iResID;
onBtZoomInClicked();
}
//以下没用
if (event->orientation() == Qt::Horizontal) {
scrollHorizontally(numSteps); //水平滚动
} else {
scrollVertically(numSteps); //垂直滚动
}
event->accept(); //接收该事件
}
}
//! [0]
void MyWidget::wheelEvent(QWheelEvent *event)
{
int numDegrees = event->delta() / 8;
int numSteps = numDegrees / 15;
if (event->orientation() == Qt::Horizontal) {
scrollHorizontally(numSteps);
} else {
scrollVertically(numSteps);
}
event->accept();
}