Method undo

src/backend/matrix/matrixcommands.cpp:29–32

}

void MatrixInsertColumnsCmd::undo() {
	m_private_obj->removeColumns(m_before, m_count);
	Q_EMIT m_private_obj->q->columnCountChanged(m_private_obj->columnCount());
}

// Insert rows
MatrixInsertRowsCmd::MatrixInsertRowsCmd(MatrixPrivate* private_obj, int before, int count, QUndoCommand* parent)