Qt自定义信号和槽

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Qt自定义信号和槽

 

#include<QObject>

 

classA

{

Q_Object;//必需的

public:

voidsendselfsignal(void)//发送自定义信号

{

printf(“objecta send signal s/n”);

emits();

}

signals:

voids();//自定义信号

};

 

classB

{

Q_Object;//必需的

public:

B(A*pa)

{

connect(pa,SIGNAL(s()),this,SLOT(recvs()));//关联信号和槽

}

publicslots:

voidrecvs()//自定义槽

{

printf(“inobject b,recved s/n”);

}

};

 

测试：

A a;

Bb(&a);

a.sendselfsignal();