How to transfer Control back to the previous form? - qt

Question

I am new to Qt.
I am doing a project using Qt Creator. In my project, I have one mainWindow. From the main window I start 4 screens (one after another, showing Initialization process). A new QDialog screen is opened, if there are any errors on any screen. My error screens have two Button (Retry, Continue). If i press Retry, i have to restart the initialization process over again.
eg;
void ErrorScreen1::on_Retry_pressed()
{
Screen1 *scrn = new Screen1(this);
scrn->show();
this->close();
}
In above example, it restarts the process.
Is there any way, I can start the initialization process from the point it was left?
Thanks in advance,

Answer 1

In common you should somehow keep the current state of your process and then you can restore it.

Answer 2

Have you considered making those four dialogs into a wizard with four steps? The next button could work for the continue, and you could have a retry button on each page that it makes sense, with just that page doing the retry logic necessary.

Answer 3

I resolved this issue by using QMessageBox as my error window.
It allowed me to start my process from the point i left.
void Screen1::ErrorMessage()
{
timer->stop();
QMessageBox *msgbox = new QMessageBox(this);
msgbox->setWindowTitle("ERROR MESSAGE");
msgbox->setText("Initialization Failed.");
msgbox->setStandardButtons(QMessageBox::Cancel | QMessageBox::Retry);
msgbox->setDefaultButton(QMessageBox::Retry);
int ret = msgbox->exec();
switch (ret)
{
case QMessageBox::Retry: timer->start(); break;
case QMessageBox::Cancel:
timer->disconnect();
ui->progressBar->setValue(0);
break;
default: break;
}
}