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运行截图如下：

源码如下：

widget.h

#ifndef WIDGET_H#define WIDGET_H#include 
   
    namespace Ui {class Widget;}class Widget : public QWidget{    Q_OBJECTpublic:    explicit Widget(QWidget *parent = 0);    ~Widget();signals:    void sendMsg();public slots:    void qmlSlot();private:    Ui::Widget *ui;};#endif // WIDGET_H
   

main.cpp

#include "widget.h"#include 
   
    int main(int argc, char *argv[]){    QApplication a(argc, argv);    Widget w;    w.show();    return a.exec();}
   

widget.cpp

#include "widget.h"#include "ui_widget.h"#include 
   
    #include 
    
     #include 
     
      #include 
      
       Widget::Widget(QWidget *parent) :    QWidget(parent),    ui(new Ui::Widget){    ui->setupUi(this);    ui->quickWidget->setSource(QUrl("qrc:/test.qml"));    QObject *pRoot = (QObject*)ui->quickWidget->rootObject();    Q_ASSERT(pRoot);    connect(pRoot, SIGNAL(qmlSignal()), this, SLOT(qmlSlot()));    connect(ui->pushButton, SIGNAL(clicked(bool)), pRoot, SIGNAL(cSignal()));    const QMetaObject *metaObject=pRoot->metaObject();    const QMetaObject *thisObject=this->metaObject();}Widget::~Widget(){    delete ui;}void Widget::qmlSlot(){    ui->pushButton->setText("qmlSlot called!");}
      
     
    
   

test.qml

import QtQuick 2.0Rectangle {    id: root    color: "green"    Text {        id: myText        text: qsTr("hello")        font.pixelSize: 70        color: "red"        anchors.centerIn: parent    }    signal qmlSignal    signal cSignal    MouseArea {        anchors.fill: parent        onClicked: qmlSignal()    }    onCSignal: {        root.color = "yellow"        myText.text = "how are you?"    }}

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