Method addButton

src/ui/DoubleTreeWidget.cpp:52–59

  }

  void addButton(QAbstractButton *button, const QString &text = QString(),
                 bool checkable = false) {
    button->setToolTip(text);
    button->setCheckable(checkable);

    mLayout->addWidget(button);
    mButtons.addButton(button, mButtons.buttons().size());
  }

  const QButtonGroup *buttonGroup() const { return &mButtons; }