Understanding QRadioButton in QT Programming

QRadioButton is a class in QT programming that represents a radio button, which is a GUI element that allows users to select a single option from a set of mutually exclusive options.

To create a QRadioButton in QT, you can use the following code:

#include <QRadioButton>
QRadioButton *radioButton = new QRadioButton("Option 1", this);
radioButton->setChecked(true);

In the above code, we create a new QRadioButton object and set its text to “Option 1”. The setChecked(true) function call ensures that this radio button is initially selected.

To handle the selection of a radio button, you can connect its toggled(bool) signal to a slot function. The toggled(bool) signal is emitted whenever the radio button’s selection state changes. Here’s an example of connecting the signal to a slot function:

connect(radioButton, &QRadioButton::toggled, this, &MyClass::onRadioButtonToggled);

In the slot function onRadioButtonToggled, you can perform any necessary actions based on the selected option.

void MyClass::onRadioButtonToggled(bool checked)
{
    if (checked)
    {
        // Option 1 is selected
        // Perform actions related to Option 1
    }
    else
    {
        // Option 1 is deselected
        // Perform actions for when Option 1 is not selected
    }
}

By using QRadioButton, you can provide users with a convenient way to make a single selection from a group of options in your QT application.

In conclusion, QRadioButton is a powerful class in QT programming that allows you to implement radio buttons with ease.