通过label来显示各种事件
鼠标按下事件
//按下显示坐标
void MyLabel::mousePressEvent(QMouseEvent * ev)
{
int i = ev->x();
int j = ev->y();
//判断按下的鼠标键位
if (ev->button() == Qt::LeftButton) {
qDebug() << "LeftButton";
}
else if (ev->button() == Qt::RightButton) {
qDebug() << "RightButton";
}
else if (ev->button() == Qt::MidButton)
{
qDebug() << "MidButton";
}
QString text = QString(




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