Qt5 学习之路及嵌入式开发：自定义信号槽例子
- 建立工程
2、建立工程名称
3、下一步
4、完成
5、点击文件->新建文件或项目
6、完成
7、添加代码：②为添加部分
8、同样方法建立reader.h //②为添加部分
9、在main.cpp修改代码:①②为添加部分
10、运行，查看结果：①为运行部分
11、附：代码
#include <QObject>
////////// newspaper.h
class Newspaper : public QObject
{
Q_OBJECT
public:
Newspaper(const QString & name) :
m_name(name)
{
}
void send()
{
emit newPaper(m_name);
}
signals:
void newPaper(const QString &name);
private:
QString m_name;
};
////////// reader.h
#include <QObject>
#include <QDebug>
class Reader : public QObject
{
Q_OBJECT
public:
Reader() {}
void receiveNewspaper(const QString & name)
{
qDebug() << "Receives Newspaper: " << name;
}
};
////////// main.cpp
#include <QCoreApplication>
#include "newspaper.h"
#include "reader.h"
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
Newspaper newspaper("Newspaper A");
Reader reader;
QObject::connect(&newspaper, &Newspaper::newPaper,
&reader, &Reader::receiveNewspaper);
newspaper.send();
return app.exec();
}