qabstracttablemodel

For Qt versions < 5 QHeaderView *verticalHeader = myTableView->verticalHeader(); verticalHeader->setResizeMode(QHeaderView::Fixed); verticalHeader->setDefaultSectionSize(24); For Qt versions >= 5 use QHeaderView *verticalHeader = myTableView->verticalHeader(); verticalHeader->setSectionResizeMode(QHeaderView::Fixed); verticalHeader->setDefaultSectionSize(24); If that function doesn’t apply to vertical headers, you likely will have to call setRowHeight() every time you add a new row.