Qt QMessageBox - 关闭应用程序而不仅仅是消息框

Question

创建了一个 QMessageBox，当我在我的应用程序上按下“开始”按钮时会出现。

按下任一按钮（确定或取消）时 - 我希望消息框关闭 - 但应用程序保持打开状态。

不幸的是，当我点击“确定”或“取消”时，整个应用程序都会关闭。有什么建议吗？

J

这是我的代码：

  Main.cpp:

    #include "openingdialog.h"
    #include <QApplication>

    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        Dialog w;
        w.show();

        return a.exec();
    }

Opening Dialog:

patientsetup::patientsetup(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::patientsetup)
{
    ui->setupUi(this);
     connect(ui->okButton, SIGNAL(clicked()), this, SLOT(confirmButtonClicked()));
     connect(ui->ACSMode, SIGNAL(clicked()), this, SLOT(ACSButtonClicked()));
     connect(ui->PromptMode, SIGNAL(clicked()), this, SLOT(PMPSAIButtonClicked()));
     connect(ui->FullMode, SIGNAL(clicked()), this, SLOT(PMPSFullbuttonClicked()));
}

void patientsetup::PMPSAIButtonClicked()
{
direct = new pmps_f(this);
        direct->setData(patient, ui->Weight->value(), ui->Height->value(), lbmvalue, bsavalue, gender);
        direct->show();
}

pmps_f MainWindow    

           pmps_f::pmps_f(QWidget *parent) :
            QMainWindow(parent),
            ui(new Ui::pmps_f)
        {
            ui->setupUi(this);
            connect(ui->startbutton,SIGNAL(clicked(bool)), this, SLOT(start()));
        }

             void pmps_f::start()
            {
                QMessageBox msgBox;
                msgBox.setText("Pressing continue will start the process with the process");
                msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
                msgBox.setDefaultButton(QMessageBox::Cancel);
                int ret = msgBox.exec();
                switch(ret) {
                    case QMessageBox::Ok:
                    msgBox.close();
                    break;
                case QMessageBox::Cancel:
                    msgBox.close();
                    break;
                }
            }

完整代码：

pmps_f::pmps_f(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::pmps_f)
{
    ui->setupUi(this);
    connect(ui->startbutton,SIGNAL(clicked(bool)), this, SLOT(start()));
}

pmps_f::~pmps_f()
{
    delete ui;
}

//public function that pulls the Patient data from the patientsetup.ui interface
void pmps_f::setData(const QString &fileName, const double &weightValue, const double &heightValue, const double &lbmValue, const double &bsaValue, const QString &genderName)
{
    ui->file->setText(fileName);
    ui->weight->setText(QString::number(weightValue));
    ui->height->setText(QString::number(heightValue));
    ui->lbm->setText(QString::number(lbmValue));
    ui->bsa->setText(QString::number(bsaValue));
    ui->gender->setText(genderName);
}

//Sedation start confirmation check
void pmps_f::start()
{
    QMessageBox msgBox;
    msgBox.setText("Pressing continue will start the sedation process");
    msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
    msgBox.setDefaultButton(QMessageBox::Cancel);
    int ret = msgBox.exec();
    switch(ret) {
       case QMessageBox::Ok:
       break;
      case QMessageBox::Cancel:
      break;
    }
}

Answer 1

我设法解决了这个问题：

setQuitOnLastWindowClosed(false);

但是 - 现在按下窗口“x”按钮时程序无法正常退出...

谁能帮忙？