Method handleColumnsAboutToBeRemoved

src/backend/matrix/MatrixModel.cpp:232–234

}

void MatrixModel::handleColumnsAboutToBeRemoved(int first, int count) {
	beginRemoveColumns(QModelIndex(), first, first + count - 1);
}

void MatrixModel::handleColumnsRemoved(int /*first*/, int /*count*/) {
	endRemoveColumns();