qt 区分鼠标左键单击，双击事件

#include "double_single_clicked.h" #include <QTimer> #include <QLabel> #include <QMouseEvent> DoubleSingleClicked::DoubleSingleClicked(QWidget *parent) : QWidget(parent) { setFixedSize(600, 400); m_label = new QLabel(this); m_label->move(15, 50); m_label->setText(QStringLiteral("区分鼠标单击，双击事件!")); m_clickedTimer = new QTimer(this); connect(m_clickedTimer, SIGNAL(timeout()), this, SLOT(slotSingleClicked())); } DoubleSingleClicked::~DoubleSingleClicked() { } void DoubleSingleClicked::mouseDoubleClickEvent(QMouseEvent *e) { if (m_clickedTimer->isActive()) m_clickedTimer->stop(); m_label->setText(QStringLiteral("鼠标双击！！")); } void DoubleSingleClicked::mousePressEvent(QMouseEvent *e) { if (Qt::LeftButton == e->button()) { m_clickedTimer->start(300); } } void DoubleSingleClicked::slotSingleClicked() { m_label->setText(QStringLiteral("鼠标单击!!")); if (m_clickedTimer->isActive()) m_clickedTimer->stop(); }