Qt TreeView的使用步骤

来源：互联网发布：mac装maven 编辑：程序博客网时间：2024/06/06 03:27

这篇文章讲述如何实现如下的一个treeView.

1.首先设置treeView的外框， 大小， model等

 QStandardItemModel *goodsModel = new QStandardItemModel(0, 4,this);  ui.treeView_->setColumnWidth(0,50);  ui.treeView_->setColumnWidth(1,200);  ui.treeView_->setColumnWidth(2,200);  ui.treeView_->setColumnWidth(3,200);

 goodsModel->setHeaderData(0, Qt::Horizontal, tr("No"));  goodsModel->setHeaderData(1, Qt::Horizontal, tr("name"));  goodsModel->setHeaderData(2, Qt::Horizontal, tr("value1"));  goodsModel->setHeaderData(3, Qt::Horizontal, tr("value2"));  ui.treeView_->setModel(goodsModel);

2.然后把数据填充到item中

for (int i = 0; i < 4; ++i) {
        QList<QStandardItem *> items;         for (int i = 0; i < 3; ++i)         {             QStandardItem *item = new QStandardItem(QString("item %0").arg(i));
            if (0 == i)                 item->setCheckable(true);             items.push_back(item);         }         goodsModel->appendRow(items);
        for (int i = 0; i < 4; ++i)         {             QList<QStandardItem *> childItems;             for (int i = 0; i < 3; ++i)          {              QStandardItem *item = new QStandardItem(QString("%0").arg(i));                         if (0 == i)                  item->setCheckable(true);
             childItems.push_back(item);          }             items.at(0)->appendRow(childItems);            }
}

3.设置treeview 能够被多选

  ui.treeView_->setSelectionMode(QAbstractItemView::ExtendedSelection);

4.设置右键选择菜单

void TreeView::contextMenuEvent(QContextMenuEvent *event)

     QMenu *pMenu = new QMenu(ui.treeView_);

     QAction* buildItem = pMenu->addAction(tr("build"));      pMenu->exec(QCursor::pos()); }

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