Qt TreeView

这篇文章讲述如何实现如下的一个treeView.

首先设置treeView的外框，大小， model等

 1 QStandardItemModel *goodsModel = new QStandardItemModel(0, 4,this);
 2 
 3 ui.treeView_->setColumnWidth(0,50); 
 4 ui.treeView_->setColumnWidth(1,200); 
 5     ui.treeView_->setColumnWidth(2,200); 
 6     ui.treeView_->setColumnWidth(3,200); 
 7     goodsModel->setHeaderData(0, Qt::Horizontal, tr("No")); 
 8     goodsModel->setHeaderData(1, Qt::Horizontal, tr("name")); 
 9     goodsModel->setHeaderData(2, Qt::Horizontal, tr("value1")); 
10     goodsModel->setHeaderData(3, Qt::Horizontal, tr("value2"));
11 
12     ui.treeView_->setModel(goodsModel);

然后把数据填充到item中

 1 for (int i = 0; i < 4; ++i) 
 2     {
 3 
 4         QList<QStandardItem *> items; 
 5         for (int i = 0; i < 3; ++i) 
 6         { 
 7             QStandardItem *item = new QStandardItem(QString("item %0").arg(i));
 8 
 9             if (0 == i) 
10                 item->setCheckable(true); 
11             items.push_back(item); 
12         } 
13         goodsModel->appendRow(items);
14 
15         for (int i = 0; i < 4; ++i) 
16         { 
17             QList<QStandardItem *> childItems; 
18             for (int i = 0; i < 3; ++i) 
19          { 
20              QStandardItem *item = new QStandardItem(QString("%0").arg(i));            
21              if (0 == i) 
22                  item->setCheckable(true);
23 
24              childItems.push_back(item); 
25          } 
26             items.at(0)->appendRow(childItems);    
27         }
28 
29     }

第三步设置treeview 能够被多选

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

第三步设置右键选择菜单

1 void TreeView::contextMenuEvent(QContextMenuEvent *event) 
2 { 
3     QMenu *pMenu = new QMenu(ui.treeView_); 
4     QAction* buildItem = pMenu->addAction(tr("build")); 
5     pMenu->exec(QCursor::pos()); 
6 }