Qt 消息框不会出现

Question

我最近开始使用qt，出现了一个我不理解的问题：

在这个特定的代码中，我只想显示一个MessageBox，如果点击了一个按钮并选中了一个单选按钮，但MessageBox不会出现。有人能帮忙吗？

#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");
    }
}

Answer 1

在我看来，您似乎需要将您的on_pushButton_clicked((与QPushButton的clicked((信号连接起来。

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

要使其工作，on_pushButton_clicked((必须是一个插槽：

class ThirdDialog {
    Q_OBJECT
    public:
    ...
    public slots:
        void on_pushButton_clicked();
    private:
    ...
};