Qt 消息框不会出现

Qt Message Box Won´t appear

我最近开始使用 qt,但出现了一个我不明白的问题:

在这个特定的代码中,我只想显示一个消息框,如果单击一个按钮并选中一个单选按钮,但消息框不会出现。有人可以帮忙吗?

#include "thirddialog.h"
#include "ui_thirddialog.h"
#include <QMessageBox>



ThirdDialog::ThirdDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::ThirdDialog)
{
    ui->setupUi(this);
    this->setWindowTitle("Eingabe UWZ");        /*Titelzeile*/
}

ThirdDialog::~ThirdDialog()
{
    delete ui;
}
void ThirdDialog::on_Back_clicked()
{
    close();
}

void ThirdDialog::on_pushButton_clicked()
{
    if(ui->radioButton->isChecked())    {
        QMessageBox::information(this,"Title","1");

    }
    if(ui->radioButton_2->isChecked())  {
        QMessageBox::information(this,"Title","2");
    }
}

在我看来,您需要将 on_pushButton_clicked() 与 QPushButton 的 clicked() 信号连接起来。

connect(ui->pushButton, &QPushButton::clicked, this, &ThirdDialog::on_pushButton_clicked);

要使其正常工作,on_pushButton_clicked() 必须是一个插槽:

class ThirdDialog {
    Q_OBJECT
    public:
    ...

    public slots:
        void on_pushButton_clicked();

    private:
    ...
};