Qt 键盘和鼠标组合功能实现

1. 通过过滤器组合Control + Enter 按键

bool MainWindow::eventFilter(QObject *watched, QEvent *event)
{
    if(event->type()==event->KeyPress)
    {
        QKeyEvent *keyEvent = (QKeyEvent *)event;
        if(keyEvent->key() == Qt::Key_Return && (keyEvent->modifiers() & Qt::ControlModifier))
        {
            qDebug()<<"EnterKey + ControlKey";
            return true;
        }
    }
    return false;
}

2. 按键与鼠标的结合 键盘按住Ctrl键 + 鼠标左键的实现

void MainWindow::mousePressEvent(QMouseEvent *event)
{
    // 获取鼠标在点击窗体上的坐标
    QPoint pos = event->pos();
    qDebug()<<pos;
    if(QApplication::keyboardModifiers() == Qt::ShiftModifier)
    {
        if(event->button() == Qt::LeftButton)
        {
            qDebug()<<"ShiftKey + MOuseLeftButton";
            return;
        }
    }
    if(QApplication::keyboardModifiers() == Qt::ControlModifier)
    {
        if(event->button() == Qt::RightButton)
        {
            qDebug()<<"ShiftKey + MOuseRightButton";
            return;
        }
    }
}

3. 三键组合Shift + Ctrl + A的实现

void MainWindow::keyPressEvent(QKeyEvent *event)
{
    if (event->modifiers() == (Qt::ShiftModifier | Qt::ControlModifier) && event->key() == Qt::Key_A)
    {
        qDebug()<<"ShiftKey + controlKey + A";
        return;
    }
}