Qt入门－表格类QTableWidget

表格是GUI中常用的控件，在Qt中，常用的表格类是QTableWidget。

    示例：

QTableWidget *table = new QTableWidget( 4, 2); //新建一4行2列的表格


//设置表格行标题
QStringList headerLabels;
headerLabels << "C1" << "C2";
table->setHorizontalHeaderLabels(headerLabels);


//设置表格行标题的对齐方式
table->horizontalHeader()->setDefaultAlignment(Qt::AlignLeft);

//设置行表题
QStringList rowLabels;
rowLabels << "Line1" << "Line2" << "Line3" << "Line4";
table->setVerticalHeaderLabels(rowLabels);


//设置每一行的高度
for( int i = 0; i < 4; i++)
table->setRowHeight(i, 22);

//自动调整最后一列的宽度使它和表格的右边界对齐
table->horizontalHeader()->setStretchLastSection( true);

//设置表格的选择方式
table->setSelectionBehavior(QAbstractItemView::SelectItems);

//设置编辑方式
table->setEditTriggers(QAbstractItemView::DoubleClicked);

//设置表格的内容
for ( int row = 0; row < 4; ++row)
{
QTableWidgetItem *item0, *item1;
item0 = new QTableWidgetItem;
item1 = new QTableWidgetItem;

QString txt = QString( "%1").arg(row + 1);
item0->setText(txt);
table->setItem(row, 0, item0);

txt = QString( "%1").arg((row + 1) * 2);
item1->setText(txt);
table->setItem(row, 1, item1);

}

//增加一行
table->setRowCount( 5);
QTableWidgetItem *vHeader5 = new QTableWidgetItem( "Line5");
table->setVerticalHeaderItem( 4, vHeader5);

QTableWidgetItem *item5_0, *item5_1;
item5_0 = new QTableWidgetItem;
item5_1 = new QTableWidgetItem;
item5_0->setText(QString( "%1").arg( 5));
item5_1->setText(QString( "%1").arg( 5 * 2));
table->setItem( 4, 0, item5_0);
table->setItem( 4, 1, item5_1);

界面中的表格如图：