Right now, to create a checkable header view, the following lines are needed:
this->FileWidget->model()->setHeaderData(NodeNameColumn, Qt::Horizontal,
Qt::Unchecked, Qt::CheckStateRole);
QHeaderView previousHeaderView = this->FileWidget->horizontalHeader();
ctkCheckableHeaderView headerView = new ctkCheckableHeaderView(Qt::Horizontal, this->FileWidget);
headerView->setClickable(previousHeaderView->isClickable());
headerView->setMovable(previousHeaderView->isMovable());
headerView->setHighlightSections(previousHeaderView->highlightSections());
headerView->setStretchLastSection(previousHeaderView->stretchLastSection());
headerView->setPropagateToItems(true);
this->FileWidget->setHorizontalHeader(headerView);

It would be nice if a "copy" function could be used to easily instanciate a checkable header view that "replaces" an existing header view.