QListWidget itemClicked和itemDoubleClicked-如果双击,则阻止单击

实际上,双击一个项目会同时产生 itemClicked 和 itemDoubleClicked 信号:单击+单击。您可以使用计时器,并在超时后检查 项目双击 不久后出现信号 项目已单击 ,如果是,则忽略 项目已单击 信号

感谢vahancho的想法,使用计时器。以下是我的解决方案:

YourClass.h类

private:
    QListWidgetItem* mSingleClickedItem;
    bool mDoubleClicked;

private slots:
    void itemClickedTimeout();

YourClass.cpp

void YourClass::itemClicked(QListWidgetItem* listWidgetItem) {
    if (!mDoubleClicked) {
        QTimer::singleShot(300, this, SLOT(itemClickedTimeout()));
        // use QApplication::doubleClickInterval() instead of 300
        mSingleClickedItem = listWidgetItem;
    }
}

void YourClass::itemClickedTimeout() {
    if (!mDoubleClicked) {
        // do something, listitem has been clicked once
    } else mDoubleClicked = false;
}

void YourClass::itemDoubleClicked(QListWidgetItem* listWidgetItem) {
    mDoubleClicked = true;

    // do something, listitem has been clicked twice
}