?首先設置接收觸控事件? ? setAttribute(Qt::WA_AcceptTouchEvents, true);

bool CollectionPoint::event(QEvent *event) {switch (event->type()) {case QEvent::TouchBegin:case QEvent::TouchUpdate:case QEvent::TouchEnd:{m_pos.clear();QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event);QList<QTouchEvent::TouchPoint> touchPoints = touchEvent->touchPoints();for (int i = 0; i < touchPoints.count(); i++){const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.at(i);QPoint point0 = mapToGlobal(touchPoint0.pos().toPoint());POINTINFO info;info.id = QString::number(i);info.x = touchPoint0.pos().toPoint().x();info.y = touchPoint0.pos().toPoint().y();switch (touchPoints.at(i).state()){case Qt::TouchPointPressed:{info.iState = 7;}break;case Qt::TouchPointMoved:{info.iState = 7;}break;case Qt::TouchPointReleased:{info.iState = 6;}break;default:break;}m_pos.append(info);}update();sendPos();return true;}default:break;}return QWidget::event(event); }

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