Pushbutton problem

[Driftwood]

I have a lineEdit next to a Save button and Cancel button. After entering text in the lineEdit, for some elusive reason, I can click the button with my mouse and it works. But, when I tab to the button and press enter, it doesn't work.

I don't use Qt enough to know why it sees a problem with me pressing enter instead of mouse clicking it. this is what I have:

void MainWindow::on_pushButton_SaveNewName_pressed()
{
    on_pushButton_SaveNewName_clicked();
}

void MainWindow::on_pushButton_SaveNewName_clicked()
{
    QSqlQuery q(db);
    if (!db.open()) {
        ui->statusbar->showMessage( db.lastError().text());
    } else {
        q.exec("PRAGMA foreign_keys = 1");
        q.prepare("INSERT INTO STUDIERS( STUDIER ) VALUES(" + quoteSQL(ui->lineEdit_AddNewName->text()) + ")");
        if(!q.exec()) qDebug() << q.lastError().text();
    }
    db.close();

    ui->lineEdit_AddNewName->setText("");
    ui->lineEdit_AddNewName->setVisible(false);
    ui->pushButton_SaveNewName->setVisible(false);
    ui->pushButton_CancelNewName->setVisible(false);
    ui->pushButton_AddNewName->setEnabled(true);
    ui->comboBox_SelectName->setEnabled(true);
    ui->menu_File->actions().at(0)->setEnabled( true);

    ui->comboBox_SelectName->clear();
    loadNames();
    ui->comboBox_SelectName->setFocus();
}

Why won't pressed work?

Happy Thanksgiving, everyone!

[SGaist]

Hi,

From the documentation:

pressed() is emitted when the left mouse button is pressed while the mouse cursor is inside the button

[mpergand]

I think you need to set your Save button as the default one,
see QPushButton::setDefault(bool)

[Driftwood]

@SGaist - Thanks for the information. But how do I make it so the button can be pressed when it has focus and the enter key's pressed?

[mpergand]

What you want to do is the standard behavior of QDialog (you're using a window/widget)
Have a look at QDialogButtonBox Class and QDialog examples in the Qt docs.

[Driftwood]

So the only way to click buttons is with the mouse? You can't tab to a button and "click" it with the <enter> key?

[mpergand]

Look at this link

They're talking about the space bar instead.

In the Qt doc about setDefault()

The default button behavior is provided only in dialogs. Buttons can always be clicked from the keyboard by pressing Spacebar when the button has focus.

[Driftwood]

@mpergand - Thank you for your help.

[jsulm]

@Driftwood pressed() is also called if button has focus and user presses space key (at least on my Linux).

[Driftwood]

@jsulm Exact same for me. Why the <enter> key isn't mapped for this is beyond me. I know that I can toggle radio buttons and checkboxes with the spacebar. This is true for most Gui toolkits. But when I want to use the keyboard to press button, the <enter> key makes more sense than the spacebar. I come from wxWidgets, where the <enter> key works that way.

Thanks for responding.

[A.A.SEZEN]

Maybe you should check qApp->focusWidget() when handling Qt::Key_Enter and Qt::Key_Return events in keyPressEvent.