Save in QSettings the current checked button of a groubbox..

[Leon]

How is it possible?

    @settings.setValue("current_page" , ui->buttonGroup->checkedButton());

    ui->buttonGroup->button(settings.value("current_page",true).toInt())->setChecked();@

won't work cause ui->buttonGroup->checkedButton() is a QAbstactButton and not an int.

[ChrisW67]

Firstly, a QButtonGroup is not a QGroupBox, so your title is misleading.

QButtonGroup::checkedId() gives you the id number you associated with the button that is currently checked: store this. You can use that to find the button to check, using QButtonGroup::id(), when you retrieve the value from QSettings.