QT tableWidget横向纵向设置

    //创建表格
    QTableWidget *tableWidget = new QTableWidget(10,5,ui->centralWidget);
    // 使表格平铺在界面
    tableWidget-> horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    tableWidget->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);    
    tableWidget->show();
    
    
	// 使表格平铺在界面
    tableWidget-> horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    tableWidget->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    // 设置控制大小
	tableWidget->resize(500,500);
    // 删除列
    tableWidget->removeColumn(0);
    // 删除行
    tableWidget->removeRow(0);


1，设置表头
    QStringList header;
    header<<"姓名"<<"年龄";
    header.push_back(QString("备注"));
    tableWidget->setHorizontalHeaderLabels(header);
    tableWidget->setVerticalHeaderLabels(header);
    // 隐藏表头
    tableWidget->verticalHeader()->setVisible(false);
    // 最后一列自动宽度
    tableWidget->horizontalHeader()->setStretchLastSection(true);

    
2，一般显示
    tableWidget->setItem(0,0,new QTableWidgetItem("张三"));
    tableWidget->setItem(0,1,new QTableWidgetItem("33"));

    // 内容居中显示
    tableWidget->item(0,0)->setTextAlignment(Qt::AlignCenter);

	// 文本颜色
    tableWidget->item(0,0)->setTextColor(QColor(200,100,100));
    // 字体
    tableWidget->item(0,0)->setFont(QFont("Microsoft Yahei"));
    // 背景颜色
    tableWidget->item(0,0)->setBackgroundColor(QColor(100,100,100));

3，放一个控件
    // 单元格里放一个控件
    QComboBox *comBox = new QComboBox();
    comBox->addItem("Male");
    comBox->addItem("Female");
    tableWidget->setCellWidget(1,1,comBox);

4，加一个图标
    QTableWidget *tableWidget = new QTableWidget(10,5,ui->centralWidget);
    tableWidget->show();


    QStringList header;
    header<<"姓名"<<"年龄";
    tableWidget->setHorizontalHeaderLabels(header);

    tableWidget->setItem(0,0,new QTableWidgetItem(QIcon("D:/1.png"),"张三"));
    tableWidget->setItem(0,1,new QTableWidgetItem("33"));
5，获取内容/清除内容/关闭
    QString string = tableWidget->item(0,0)->text();
    qDebug() << string << endl;

    // 清除所有内容含表头// 清除内容不含表头
    tableWidget->clear();

    tableWidget->close();
6, 设置行高和列宽
    tableWidget->setColumnWidth(3,300);
    tableWidget->setRowHeight(3,30);

7,单元格选中行为
// 选中整行
tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);
// 选中单元格
tableWidget->setSelectionBehavior(QAbstractItemView::SelectItems);
// 选中一列
tableWidget->setSelectionBehavior(QAbstractItemView::SelectColumns);

// 只允许选中一行
tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
// 允许选中多行（默认情况）
tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);

8，合并单元格
    QTableWidget *tableWidget = new QTableWidget(10,5,ui->centralWidget);
    tableWidget->show();

    QStringList header;
    header<<"姓名"<<"年龄";
    tableWidget->setHorizontalHeaderLabels(header);

    tableWidget->setItem(0,0,new QTableWidgetItem("张三"));
    tableWidget->setItem(0,1,new QTableWidgetItem("33"));

    tableWidget->setSpan(1,0,1,2);

9，信号
（1）头函数
public slots:
    void on_itemChanged(QTableWidgetItem *item);
    QTableWidget *tableWidget = new QTableWidget(10,5,ui->centralWidget);
（2）建立表格建立槽函数
    tableWidget->show();

    QStringList header;
    header<<"姓名"<<"年龄";
    tableWidget->setHorizontalHeaderLabels(header);

    connect(tableWidget, SIGNAL(itemChanged(QTableWidgetItem *)), this, SLOT(on_itemChanged(QTableWidgetItem *)));

 

横向控件