Posted on 2011-08-04 21:30
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轉載隨筆 、
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1.導出Person類，并且一個PersonGroup類，PersonGroup類是Person的一個組
2.具體導出過程
1.通過屬性來實現，具體的請看代碼
3.具體代碼
// person.h
#ifndef PERSON_H
#define PERSON_H
#include <QObject>
#include <QDeclarativeListProperty>
#include <QList>
class Person : public QObject
{
Q_OBJECT
Q_PROPERTY(QString name READ getName WRITE setName NOTIFY sendNameChange)
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;
};
class PersonGroup : public QObject
{
Q_OBJECT
Q_PROPERTY(QDeclarativeListProperty<Person> members READ members)
public:
explicit PersonGroup(QObject *parent = 0);
QDeclarativeListProperty<Person> members(void);
Q_INVOKABLE int membersCount(void) const;
Q_INVOKABLE Person *member(int index) const;
private:
QList<Person*> m_MemberList;
};
#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();
}
//---------------------------------
//
PersonGroup::PersonGroup(QObject *parent)
:QObject(parent)
{
}
//---------------------------------
//
QDeclarativeListProperty<Person> PersonGroup::members(void)
{
return QDeclarativeListProperty<Person>(this, m_MemberList);
}
//---------------------------------
//
int PersonGroup::membersCount() const
{
return m_MemberList.size();
}
//---------------------------------
//
Person *PersonGroup::member(int index) const
{
return m_MemberList.at(index);
} |
// 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<PersonGroup>("People",1,0,"PersonGroup");
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>(); 導出就可以注釋這條
Rectangle {
width: 640
height: 480
property int pgcurIndex: 0;
PersonGroup{
id: group;
members: [
Person { name: "A"; age: 20},
Person { name: "B"; age: 21},
Person { name: "C"; age: 22},
Person { name: "D"; age: 23},
Person { name: "E"; age: 24}
]
}
// 顯示這份工作的一些信息
Rectangle{
x: 100; y: 100;
width: 100; height: 100;
Text { id: text1; text: ""}
Text { id: text2; y: 20; text: ""}
Text { id: text3; y: 40; text: ""}
}
MouseArea{
anchors.fill: parent;
onClicked:{
//if (pgcurIndex < group.membersCount() - 1){ // 這里兩種方法都可以
if (pgcurIndex < group.members.length - 1){
pgcurIndex++;
}else{
pgcurIndex = 0;
}
// 顯示信息
text1.text = "PersonGroup index: " + pgcurIndex;
var person = group.member(pgcurIndex);
text2.text = "Person name: " + person.name;
text3.text = "Person age: " + person.age;
}
}
} |
說明：
這里導出了兩個類Person， PersonGroup， PersonGroup保存來一個Person的組，
我們通過導出的函數來調用類面的成員，獲取成員的信息.