connect函数

来源：互联网发布：数控编程方法有编辑：程序博客网时间：2024/04/29 13:58

接上篇关于connect函数的研究：

代码如下：

#ifndefFATHERDIALOG_H

#define FATHERDIALOG_H

#include <QDialog>

namespace Ui {

class FatherDialog;

class FatherDialog : public QDialog

    Q_OBJECT

public:

    explicit FatherDialog(QWidget *parent = 0);

    ~FatherDialog();

private slots:

    void on_pushButton_clicked();

    void showChildDialog();

private:

    Ui::FatherDialog *ui;

};

#endif // FATHERDIALOG_H

//fatherdialog.h

#include"fatherdialog.h"

#include "ui_fatherdialog.h"

#include <QMessageBox>

FatherDialog::FatherDialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::FatherDialog)

    ui->setupUi(this);

    QObject::connect(ui->childB,

                     &QPushButton::clicked,

                     this,

                     &FatherDialog::showChildDialog);

FatherDialog::~FatherDialog()

    delete ui;

void FatherDialog::on_pushButton_clicked()

    QMessageBox::information(this,"提示","<font size='26'>请告诉我为什么</font>",QMessageBox::Ok);

void FatherDialog::showChildDialog()

    QDialog * d= new QDialog(this);

    d->show();

//main.cpp

#include"fatherdialog.h"

#include <QApplication>

int main(int argc, char *argv[])

    QApplication a(argc, argv);

    FatherDialog w;

    w.show();

    return a.exec();

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