Question

I have some Dialog class via which I select files and/or directories. Within this dialog there is a fnc called okBtn_clicked and in this fnc I’m getting QModelIndexes and via them I’m able to create QStringList of picked files. But how to return them after this dialog is closed?
EDIT:

QModelIndexList Dir_File_Select::okBtn_clicked_()
{
    accept();
    return view->selectionModel()->selectedIndexes();
}  

Answer 1

You can still access the dialog after it is closed except it’s destructor has been called. So the easiest approach would be to add a public function that will return the QStringList you want.

QStringList getList()
{
    QStringList list;
    // populate it
    return list;
}

In your main application you should just connect the accepted signal of the dialog with a slot that handles it and retrieves the string list.

connect(dialog, SINGAL(accepted()), this, SLOT(dialogAccepted()));

void dialogAccepted()
{
   QStringList list = dialog->getList();
   // do whatever you want with it
}

Another option is to create a signal in your dialog with a QStringList as argument and emit it before the accept

void onOKButtonClicked()
{
    QStringList list = createList(); // Construct a QStringList
    emit myStringListSignal(list);
    accept();
}

Again you have to connect this signal with a slot that handles the QStringList

connect(dialog, SIGNAL(myStringListSignal(QStringList)), this, SLOT(handleDialogStringList(QStringList)));

void handleDialogStringList(QStringList list)
{
   // do whatever you want with the list
}

Your ok button slot should not return anything since this is handled internally by Qt.