Qt MainWindow在QMessageBox关闭后退出

时间:2016-07-24 17:32:51

标签: c++ qt

我试图创建一个必须在启动时隐藏的小工具,所以我正在做:

w.showMinimized();
w.hide();
在main.cpp上的

以隐藏模式调用我的MainWindow,但问题是当我调用FinishSession()这是从MainWindow of Course调用的ProductDlg类函数时,每当我点击“是”时它就存在或者没有“你看到QMessageBox吼叫

void ProductsDlg::FinishSession()
{
    if(Session)
    {
        if(this->isActiveWindow())
        {
            this->hide();
        }

        QMessageBox::StandardButton _finishSession = QMessageBox::question(this , "Question" , "Do you wanna Finish the Session ?" , QMessageBox::Yes | QMessageBox::No); // THIS MESSAGEBOX - IT EXISTS AFTER THIS

        if(_finishSession == QMessageBox::Yes)
        {
            Session = false;
        }
    }
    else
    {
        qDebug() << "No Session is Running";
    }
}

这是来自MainWindow.cpp,我称之为ProductsDlg:

bool MainWindow::nativeEvent(const QByteArray &eventType , void *message , long *result)
{
    Q_UNUSED(eventType);
    Q_UNUSED(result);

    MSG * msg = static_cast<MSG*>(message);
    if(msg->message == WM_HOTKEY)
    {
        if(msg->wParam == 0)
        {
            if(!pd->isVisible())
            {
                QRect rect = QApplication::desktop()->availableGeometry();
                pd->show();
                pd->setFocus();
                pd->activateWindow();
                pd->move(rect.width() - pd->width() , rect.height());
                QPropertyAnimation *ani = new QPropertyAnimation(pd , "pos");
                ani->setDuration(700);
                ani->setStartValue(pd->pos());
                ani->setEndValue(QPoint(rect.width() - pd->width() , rect.height() - pd->height()));
                ani->start();
            }
            else if(!pd->isActiveWindow())
            {
                pd->activateWindow();
            }
            else if(pd->isActiveWindow())
            {
                pd->hide();
            }
        }

        else if(msg->wParam == 1)
        {
            pd->FinishSession();
        }

        else if(msg->wParam == 2)
        {
            if(pd->isActiveWindow())
            {
                pd->hide();
            }
        }

        else
        {
            return false;
        }
    }
    else
    {
        return false;
    }
}

'pd'是全局定义的,并在MainWindow构造函数上初始化。

1 个答案:

答案 0 :(得分:1)

在这里找到答案:
Qt 5.1 - QMessageBox Bug? Program Exits(0) if QMessageBox is called while QDialog is hidden

我向main.cpp添加了qApp->setQuitOnLastWindowClosed(false);,问题解决了!