QT qtablewidget用法

最新推荐文章于 2025-05-07 17:34:08 发布

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本文介绍了一个使用Qt框架中的tableWidget组件实现动态表格显示的例子。该示例展示了如何设置表格列数、定义表头标签、调整列宽，并通过信号槽机制响应用户的交互行为。此外，还介绍了根据不同视图更新表格内容的方法。

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ui.tableWidget-> setColumnCount(1);
QStringList heard;
heard<<"X0_Y0-X1_Y1";
ui.tableWidget-> setHorizontalHeaderLabels ( heard );

ui.tableWidget->resizeColumnsToContents();//设置宽度随字长变化

connect(ui.tableWidget, SIGNAL(itemPressed(QTableWidgetItem *)),this, SLOT(OnTableRightBtn(QTableWidgetItem * )));//设置按键按下信号槽

connect(ui.tableWidget, SIGNAL(itemSelectionChanged()),this, SLOT(OnTableSelectChanged()));//

void CTabTwo::UpdateData()
{
ui.tableWidget->clear();//先清除

if (m_nCurrentView == 1)
{
QStringList heard;
heard<<"X0_Y0-X1_Y1";
ui.tableWidget-> setHorizontalHeaderLabels ( heard );

//再重新添加,添加0_1
for (int i = 0; i < ui.label_1->m_listCenter.size(); i++)
{
QString str = QString("X0=%1,Y0=%2,X1=%3,Y1=%4").arg(ui.label_1->m_listCenter.at(i).x()).arg(ui.label_1->m_listCenter.at(i).y()).arg(ui.label_2->m_listCenter.at(i).x()).arg(ui.label_2->m_listCenter.at(i).y());

ui.tableWidget->insertRow(i);
QTableWidgetItem *item = new QTableWidgetItem(str);
ui.tableWidget->setItem(i, 0, item );
}
}
else if (m_nCurrentView ==2)
{
QStringList heard;
heard<<"X1_Y1-X2_Y2";
ui.tableWidget-> setHorizontalHeaderLabels ( heard );

//再重新添加,添加0_1
for (int i = 0; i < ui.label_3->m_listCenter.size(); i++)
{
QString str = QString("X1=%1,Y1=%2,X2=%3,Y2=%4").arg(ui.label_2->m_listCenter.at(i).x()).arg(ui.label_2->m_listCenter.at(i).y()).arg(ui.label_3->m_listCenter.at(i).x()).arg(ui.label_3->m_listCenter.at(i).y());

ui.tableWidget->insertRow(i);
QTableWidgetItem *item = new QTableWidgetItem(str);
ui.tableWidget->setItem(i, 0, item );
}
}

}

void CTabTwo::OnTableRightBtn(QTableWidgetItem *item )
{
if (qApp->mouseButtons() == Qt::RightButton)
{
QMenu menu;
menu.addAction(m_pAcDel);
menu.addAction(m_pAcCel);

menu.exec(QCursor::pos()/*mapToGlobal(qApp->pos())*/);
}
else if (qApp->mouseButtons() == Qt::LeftButton)
{
int n = ui.tableWidget->currentRow();

if (m_nCurrentView == 1)
{
ui.label_1->FocusPoint(n);
ui.label_2->FocusPoint(n);
}
else if(m_nCurrentView ==2)
{
ui.label_2->FocusPoint(n);
ui.label_3->FocusPoint(n);
}

}
}

void CTabTwo::OnTableSelectChanged()
{
int n = ui.tableWidget->currentRow();

if (m_nCurrentView == 1)
{
ui.label_1->FocusPoint(n);
ui.label_2->FocusPoint(n);
}
else if(m_nCurrentView ==2)
{
ui.label_2->FocusPoint(n);
ui.label_3->FocusPoint(n);
}
}