RTY 实践出真知

// person.h
#ifndef PERSON_H
#define PERSON_H
#include <QObject>
#include <QColor>
class Person : public QObject
{
    Q_OBJECT
    // 设置设置属性的名字是 name
    // 对应读取函数名字 getName
    // 对应写函数名字 setName
    // 属性发生改变后发送信号 sendNameChange
    Q_PROPERTY(QString name READ getName WRITE setName NOTIFY sendNameChange)
   // 设置设置属性的名字是 age
   // 对应读取函数名字 getAge
   // 对应写函数名字 setAge
   // 属性发生改变后发送信号 sendAgeChange
   Q_PROPERTY(int age READ getAge WRITE setAge NOTIFY sendAgeChange)
public:
    explicit Person(QObject *parent = 0);
    QString getName(void) const;
    void setName(const QString& name);
    int getAge(void);
    void setAge(int age);
signals:
    void sendNameChange(void);
    void sendAgeChange(void);
private:
    QString     m_Name;
    int         m_Age;
};
/*
 设想一份工作给予一个人
 */
class Job : public QObject
{
    Q_OBJECT
    Q_PROPERTY(Person *per READ getPerson WRITE setPerson NOTIFY sendPersonChange)
    Q_PROPERTY(QString jn READ getJobName WRITE setJobName NOTIFY sendJobNameChange)
public:
    explicit Job(QObject *parent = 0);
    ~Job();
    void setPerson(Person *per);
    Person *getPerson(void) const;
    void setJobName(const QString & jobname);
    QString getJobName(void) const;
signals:
    void sendPersonChange();
    void sendJobNameChange();
private:
    Person *m_Person;
    QString m_JobName;
};
#endif // PERSON_H

// person.cpp
#include "person.h"
//---------------------------------
//
Person::Person(QObject *parent) :
    QObject(parent), m_Name("unknow"), m_Age(0)
{
}
//---------------------------------
//
QString Person::getName(void) const
{
    return m_Name;
}
//---------------------------------
//
void Person::setName(const QString& name)
{
    m_Name = name;
    emit sendNameChange();
}
//---------------------------------
//
int Person::getAge(void)
{
    return m_Age;
}
//---------------------------------
//
void Person::setAge(int age)
{
    m_Age = age;
    emit sendAgeChange();
}
//---------------------------------
//
Job::Job(QObject *parent)
    :QObject(parent), m_Person(0), m_JobName("unknown")
{
}
//---------------------------------
//
Job::~Job()
{
}
//---------------------------------
//
void Job::setPerson(Person *per)
{
    m_Person = per;
    emit sendPersonChange();
}
//---------------------------------
//
Person *Job::getPerson(void) const
{
    return m_Person;
}
//---------------------------------
//
void Job::setJobName(const QString & jobname)
{
    m_JobName = jobname;
    emit sendJobNameChange();
}
//---------------------------------
//
QString Job::getJobName(void) const
{
    return m_JobName;
}

// main.cpp
#include <QtGui/QApplication>
#include <QtDeclarative/QDeclarativeView>
#include <QtDeclarative/QDeclarativeEngine>
#include <QtDeclarative/QDeclarativeComponent>
#include "person.h"
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    qmlRegisterType<Person>("People",1,0,"Person");
    //qmlRegisterType<Person>();
    qmlRegisterType<Job>("People",1,0,"Job");
    QDeclarativeView qmlView;
    qmlView.setSource(QUrl::fromLocalFile("../UICtest/UICtest.qml"));
    qmlView.show();
    return a.exec();
}

// UICtest.qml
import Qt 4.7
import People 1.0 //如果是qmlRegisterType<Person>(); 导出就可以注释这条
Rectangle {
    width: 640
    height: 480
    Job {
        id: jobA;
        jn: "Learn";
        per: Person { id: ps; name: "Luly"; age: 25; }
    }
    // 显示这份工作的一些信息
    Rectangle{
        x: 100; y: 100;
        width: 100; height: 100;
        Text { text: "Job name:" + jobA.jn; }
        Text { y: 20; text: "Person name:" + ps.name; }
        Text { y: 40; text: "Person age:"  + ps.age; }
    }
    MouseArea{
        anchors.fill: parent;
        onClicked:{
            // 我要改变工作的名字 工作人的信息
            jobA.jn = "Clean House";
            ps.name = "Tom";
            ps.age = 30;
        }
    }
}