QTreeView

 

 

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 
    
    
    
    }
   
   
   
   

 

本文来源：http://www.cnblogs.com/sld666666/archive/2011/02/15/1955179.html