表头折行显示

//方法一QVector<QString> chNames;chNames<<"表头1"<<"表头2长命名abcdefg";ui.tableWidget->setColumnCount(chNames.size()+1);ui.tableWidget->setHorizontalHeaderItem(0, new QTableWidgetItem(QString::fromLocal8Bit("序号")));ui.tableWidget->setColumnWidth(0, 80);for (int i = 0; i < chNames.size(); i++){//ui.tableWidget->setHorizontalHeaderItem(i + 1, new QTableWidgetItem(chNames[i]));if (chNames[i].length() > 6){ui.tableWidget->setHorizontalHeaderItem(i + 1, new QTableWidgetItem(chNames[i].mid(0, chNames[i].length()/2) + "\n" + chNames[i].mid(chNames[i].length() / 2)));}else{ui.tableWidget->setHorizontalHeaderItem(i + 1, new QTableWidgetItem(chNames[i].mid(0, 6)));}ui.tableWidget->setColumnWidth(i + 1, 90);}//方法二RbTableHeaderView *hHead = new RbTableHeaderView(Qt::Horizontal, 3, chNames.size());//（水平表头，3行，chNames.size()列）chNames.size() == 2 所以是创建3行2列ui.tableWidget->setHorizontalHeader(hHead);QAbstractItemModel * hModel = hHead->model();QVector<QString> m_soil_head1;m_soil_head1 << u8"序号";for (int i = 0; i < chNames.size(); i++){if (chNames[i].length() > 6)//表头字符串长度大于6时折行显示{m_soil_head1 << chNames[i].mid(0, chNames[i].length()/2) + "\n" + chNames[i].mid(chNames[i].length() / 2));//折行规则：字符串对折显示}else{m_soil_head1 << chNames[i].mid(0, 6);}hHead->setColumnWidth(i, 180);}for (int col = 0; col < m_soil_head1.size(); col++){hModel->setData(hModel->index(0, col), m_soil_head1[col], Qt::DisplayRole);hHead->setSpan(0, col, 3, 1);//合并单元格 0行 col列开始合并 3行1列 为1个单元格}hHead->setColumnWidth(0, 80);hHead->show();

多行表头

	RbTableHeaderView *hHead = new RbTableHeaderView(Qt::Horizontal, 2, chNames.size());//（水平表头，3行，chNames.size()列）chNames.size() == 2 所以是创建2行2列的表头ui.tableWidget->setHorizontalHeader(hHead);QAbstractItemModel * hModel = hHead->model();QVector<QString> m_soil_head1，m_soil_head2;m_soil_head1 << u8"序";m_soil_head2 << u8"号";for (int i = 0; i < chNames.size(); i++){m_soil_head1 << chNames[i].mid(0, chNames[i].length()/2));m_soil_head1 << chNames[i].mid(chNames[i].length() / 2);}for (int col = 0; col < m_soil_head1.size(); col++){hModel->setData(hModel->index(0, col), m_soil_head1[col], Qt::DisplayRole);if (m_soil_head2[col].isEmpty()){hHead->setSpan(0, col, 2, 1);//第二行表头数据为空时，合并单元格（2行1列的单元格合并为一个单元格）}else{hModel->setData(hModel->index(1, col), m_soil_head2[col], Qt::DisplayRole);}}hHead->setMinimumHeight(40);hHead->show();