Qt获得事件

这个是一个从一个对话框得到另一个对话框信息的qt例子（只有主要程序）

[myqq.h]
#ifndef MYQQ_H
#define MYQQ_H

#include
#include "ui_myqq.h"
#include
#include "qqqq.h"

class myqq : public QMainWindow
{
        Q_OBJECT

public:
        myqq(QWidget *parent = 0, Qt::WFlags flags = 0);
        ~myqq();

private:
        Ui::myqqClass ui;

public:
        qqqq *a;
        QPushButton *b;

public slots:
                void q_show();
};

#endif // MYQQ_H

----------------------------------------------------------
[main.cpp]
#include "myqq.h"
#include

int main(int argc, char *argv[])
{
        QApplication a(argc, argv);
        myqq w;
        w.show();
        return a.exec();
}

-----------------------------------------------------------
[myqq.cpp]
#include "myqq.h"
#include "qqqq.h"
#include

myqq::myqq(QWidget *parent, Qt::WFlags flags)
        : QMainWindow(parent, flags)
{
        ui.setupUi(this);

        b = new QPushButton(this);
        connect(b, SIGNAL(clicked()), this, SLOT(q_show()));

        a = new qqqq();
   //   a->getname(ui.comboBox->currentText());

}

myqq::~myqq()
{
}

void myqq::q_show()
{
        QString name = ui.comboBox->currentText();
        qDebug() << ("QDebug << %s", name);

//      qqqq w;      //获得事件
//      w.getname(name);                       
//      w.exec();

        a->getname(name);
        a->exec();
}
--------------------------------------------------------------
[qqqq.h]
#ifndef QQQQ_H
#define QQQQ_H

#include
#include "ui_qqqq.h"

class qqqq : public QDialog
{
        Q_OBJECT

public:
        qqqq(QWidget *parent = 0);
        ~qqqq();

private:
        Ui::qqqqClass ui;
//      QLabel *label; 

public:
        void getname(QString name);

};

#endif // QQQQ_H

--------------------------------------------------------------
[qqqq.cpp ]
#include "qqqq.h"
#include "myqq.h"

qqqq::qqqq(QWidget *parent)
        : QDialog(parent)
{
        ui.setupUi(this);
        //ui.lineEdit->setText(myqq::comboBox->currentText());
        //printf("name = %s\n", name);
//      getname("Hello");
        //label = new QLabel(this);
//      label->setText("Hello");       
}

qqqq::~qqqq()
{

}
void qqqq::getname(QString name)
{
        ui.label->setText(name);
}

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