How to emit QLineEdit's text after pressing a QPushButton in a modeless QDialog

[Wasabi]

The title pretty much states it all.

I have a modeless dialog in my application, and within it is a QLineEdit object and a QPushButton. How can I emit the value of the QLineEdit object (i.e. the user input) to the rest of the application when the user pressed the QPushButton (i.e. "Ok")?

If it were a modal dialog, then it'd simply be the return value of the calling function, but being modeless... any suggestions?

[tbscope]

Simply emit a signal from the slot connected to the Ok button.

Then in your program connect a slot to this signal.

[Wasabi]

Please excuse my ignorance, but I'm not quite following. To keep things simple, here's the code:

bool MyCanvas::HorizonDialog()
{
    QDialog* dlg = new QDialog(this);
    dlg->setAttribute(Qt::WA_DeleteOnClose);
    dlg->setWindowTitle("New Horizon");
    QHBoxLayout* layout = new QHBoxLayout;
    QPushButton* ok = new QPushButton("OK",dlg);
    ok->setDefault(true);
    connect(ok,SIGNAL(clicked()),dlg,SLOT(close()));
    connect(ok,SIGNAL(clicked()),this,SLOT(NewHorizon()));
    QPushButton* cancel = new QPushButton("Cancel",dlg);
    QLineEdit* text = new QLineEdit(dlg);
    layout->addWidget(text);
    layout->addWidget(ok);
    layout->addWidget(cancel);
    dlg->setLayout(layout);
    dlg->raise();
    dlg->show();
    return true;
}

bool MyCanvas::HorizonDialog()
{
    QDialog* dlg = new QDialog(this);
    dlg->setAttribute(Qt::WA_DeleteOnClose);
    dlg->setWindowTitle("New Horizon");
    QHBoxLayout* layout = new QHBoxLayout;
    QPushButton* ok = new QPushButton("OK",dlg);
    ok->setDefault(true);
    connect(ok,SIGNAL(clicked()),dlg,SLOT(close()));
    connect(ok,SIGNAL(clicked()),this,SLOT(NewHorizon()));
    QPushButton* cancel = new QPushButton("Cancel",dlg);
    QLineEdit* text = new QLineEdit(dlg);
    layout->addWidget(text);
    layout->addWidget(ok);
    layout->addWidget(cancel);
    dlg->setLayout(layout);
    dlg->raise();
    dlg->show();
    return true;
}

To copy to clipboard, switch view to plain text mode 

Are you suggesting placing a

connect(ok,SIGNAL(clicked()), //.... I honestly don't know what to connect that signal to.

connect(ok,SIGNAL(clicked()), //.... I honestly don't know what to connect that signal to.

To copy to clipboard, switch view to plain text mode 

[wysota]

tbscope is suggesting to subclass QDialog, move most of the code from your HorizonDialog() method to its constructor and add a signal to the class. Besides the signal add a slot that will be connected to your ok button's clicked signal. From within that slot emit the dialog signal and make it carry the value you want.

[Wasabi]

Ah, yes indeed, that would do the trick, wouldn't it?