[提问]关于QT(qtouch)多点触屏的代码问题. [复制链接]

关于qt 多点触屏的一段代码，我想实现当前单词被选中的情况下（至此一点触屏），第二点触屏出现时，响应并弹出一个空间，就是食指选词，中指在食指不离开屏幕的同时点击屏幕，弹出一个控件代码如下：
QTextCursor cursor;cursor = this->textCursor();if (cursor.hasSelection()){QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event);QList<QTouchEvent::TouchPoint> touchPoints = touchEvent->touchPoints();if (touchPoints.count() == 2) {// determine scale factorconst QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();QLineF (touchPoint0.lastScenePos(), touchPoint1.lastScenePos());if (touchEvent->touchPointStates() & Qt::TouchPointReleased){textion->show();}}}}}

能实现吗？手头无多点触屏设备，如果不能请指出代码不合理的地方，详细的答案狂送分！

void textedit::multitouch(QEvent *event)
{

    {
            QTextCursor cursor;
            cursor = this->textCursor();

            if (cursor.hasSelection())
            {
                QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event);
                QList<QTouchEvent::TouchPoint> touchPoints = touchEvent->touchPoints();
                if (touchPoints.count() == 2) {
                  
                    const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
                    const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();

                    QLineF (touchPoint0.lastScenePos(), touchPoint1.lastScenePos());

                    if (touchEvent->touchPointStates() & Qt::TouchPointReleased)
                    {
                        textion->show();



                    }
        }
}
        }
    }

能告诉我你是怎么获取到touchEvent的吗？我总是获取到mouseEvent