QRadioButton::Validate PHP Method

    public function Validate()
    {
        if ($this->blnRequired) {
            if (!$this->blnChecked) {
                $this->strValidationError = sprintf(QApplication::Translate('%s is required'), $this->strName);
                return false;
            }
        }
        $this->strValidationError = null;
        return true;
    }