放置treeview控件和dirlistbox控件 Option ExplicitPrivate Sub Form_Load() ' 初始化控件的内容 Call InitTreeData TVW.Nodes(1).Selected = True ' 根节点为当前节点 TVW.Nodes(1).EnsureVisible ' 根节点可见 End Sub' 初始化控件的内容,为TreeView控件增加4层目录 Private Sub InitTreeData() ' 首先增加最顶级,即根目录 TVW.Nodes.Add , , "R", "D:\"
' 调用递归函数增加后5级目录 AddDir TVW.Nodes(1).Index, 1, 6
TVW.Nodes(1).Expanded = True End Sub' 递归函数,为当前节点及其同层节点增加各自的子节点,到nLastLevel级节点结束 Private Sub AddDir(ByVal nCurIndex As Integer, ByVal nLevel As Integer, ByVal nLastLevel As Integer) Dim nodIndex As Integer
' 已经到达结束层 If nLevel >= nLastLevel Then Exit Sub End If
' 为该层节点逐个增加子节点 Do While nodIndex <> TVW.Nodes(nCurIndex).LastSibling.Index ' 当前节点不是该层的最后一个节点时
' 为指定节点增加子节点 AddNodeForOne nodIndex If TVW.Nodes(nodIndex).Children > 0 Then ' 如果有子节点,则为所有子节点加子节点 AddDir TVW.Nodes(nodIndex).Child.Index, nLevel + 1, nLastLevel End If
' 为同层最末节点增加子节点 AddNodeForOne nodIndex If TVW.Nodes(nodIndex).Children > 0 Then ' 如果有子节点,则为所有子节点加子节点 AddDir TVW.Nodes(nodIndex).Child.Index, nLevel + 1, nLastLevel End IfEnd Sub' 为指定节点增加子节点 Private Sub AddNodeForOne(ByVal nodIndex As Integer) Dim nodItem As Node Dim i As Integer Set nodItem = TVW.Nodes(nodIndex) ' 当前节点 Dir1.Path = TVW.Nodes(nodIndex).Text ' 当前目录 i = 0 Do While i < Dir1.ListCount ' 增加子目录做子节点,以父节点的Key+i做新节点的Key TVW.Nodes.Add nodItem.Key, tvwChild, nodItem.Key & "-" & Format(i), Dir1.List(i) i = i + 1 Loop
nodItem.Expanded = True End Sub'''''以下是通用的模块 ' 选取节点 Private Sub TVW_NodeCheck(ByVal Node As MSComctlLib.Node) gCheckChildrenBySelf TVW, Node.Index, Node.Checked gCheckParentBySibling TVW, Node.Index End Sub' 根据自身选取情况,确定全选或取消其下所有子项 Private Sub gCheckChildrenBySelf(TVW As TreeView, ByVal curIndex As Integer, ByVal bCh As Integer) Dim n As Integer If TVW.Nodes(curIndex).Children <= 0 Then Exit Sub Else n = TVW.Nodes(curIndex).Child.Index Do While n <> TVW.Nodes(curIndex).Child.LastSibling.Index TVW.Nodes(n).Checked = bCh gCheckChildrenBySelf TVW, n, bCh n = TVW.Nodes(n).Next.Index Loop TVW.Nodes(n).Checked = bCh gCheckChildrenBySelf TVW, n, bCh End If End Sub' 根据同层、同父节点的选取情况,确定是否选取其父(乃至更上层),直至根节点 Private Sub gCheckParentBySibling(TVW As TreeView, ByVal curIndex As Integer) Dim n As Integer Dim bHaveChecked As Boolean If TVW.Nodes(curIndex).FirstSibling.Index = 1 Then Exit Sub Else bHaveChecked = False n = TVW.Nodes(curIndex).FirstSibling.Index Do While n <> TVW.Nodes(curIndex).LastSibling.Index If TVW.Nodes(n).Checked = True Then bHaveChecked = True Exit Do End If n = TVW.Nodes(n).Next.Index Loop If TVW.Nodes(n).Checked = True Then bHaveChecked = True End If
If bHaveChecked = True Then TVW.Nodes(curIndex).Parent.Checked = vbChecked Else TVW.Nodes(curIndex).Parent.Checked = vbUnchecked End If
gCheckParentBySibling TVW, TVW.Nodes(curIndex).Parent.Index End If End Sub
Option ExplicitPrivate Sub Form_Load()
' 初始化控件的内容
Call InitTreeData
TVW.Nodes(1).Selected = True ' 根节点为当前节点
TVW.Nodes(1).EnsureVisible ' 根节点可见
End Sub' 初始化控件的内容,为TreeView控件增加4层目录
Private Sub InitTreeData()
' 首先增加最顶级,即根目录
TVW.Nodes.Add , , "R", "D:\"
' 调用递归函数增加后5级目录
AddDir TVW.Nodes(1).Index, 1, 6
TVW.Nodes(1).Expanded = True
End Sub' 递归函数,为当前节点及其同层节点增加各自的子节点,到nLastLevel级节点结束
Private Sub AddDir(ByVal nCurIndex As Integer, ByVal nLevel As Integer, ByVal nLastLevel As Integer)
Dim nodIndex As Integer
' 已经到达结束层
If nLevel >= nLastLevel Then
Exit Sub
End If
' 获得指定节点的同层第一个节点索引
nodIndex = TVW.Nodes(nCurIndex).FirstSibling.Index
' 为该层节点逐个增加子节点
Do While nodIndex <> TVW.Nodes(nCurIndex).LastSibling.Index
' 当前节点不是该层的最后一个节点时
' 为指定节点增加子节点
AddNodeForOne nodIndex
If TVW.Nodes(nodIndex).Children > 0 Then
' 如果有子节点,则为所有子节点加子节点
AddDir TVW.Nodes(nodIndex).Child.Index, nLevel + 1, nLastLevel
End If
' 指向下一个同层节点
nodIndex = TVW.Nodes(nodIndex).Next.Index
Loop
' 为同层最末节点增加子节点
AddNodeForOne nodIndex
If TVW.Nodes(nodIndex).Children > 0 Then
' 如果有子节点,则为所有子节点加子节点
AddDir TVW.Nodes(nodIndex).Child.Index, nLevel + 1, nLastLevel
End IfEnd Sub' 为指定节点增加子节点
Private Sub AddNodeForOne(ByVal nodIndex As Integer)
Dim nodItem As Node
Dim i As Integer Set nodItem = TVW.Nodes(nodIndex) ' 当前节点
Dir1.Path = TVW.Nodes(nodIndex).Text ' 当前目录
i = 0
Do While i < Dir1.ListCount ' 增加子目录做子节点,以父节点的Key+i做新节点的Key
TVW.Nodes.Add nodItem.Key, tvwChild, nodItem.Key & "-" & Format(i), Dir1.List(i)
i = i + 1
Loop
nodItem.Expanded = True
End Sub'''''以下是通用的模块
' 选取节点
Private Sub TVW_NodeCheck(ByVal Node As MSComctlLib.Node)
gCheckChildrenBySelf TVW, Node.Index, Node.Checked
gCheckParentBySibling TVW, Node.Index
End Sub' 根据自身选取情况,确定全选或取消其下所有子项
Private Sub gCheckChildrenBySelf(TVW As TreeView, ByVal curIndex As Integer, ByVal bCh As Integer)
Dim n As Integer If TVW.Nodes(curIndex).Children <= 0 Then
Exit Sub
Else
n = TVW.Nodes(curIndex).Child.Index
Do While n <> TVW.Nodes(curIndex).Child.LastSibling.Index
TVW.Nodes(n).Checked = bCh
gCheckChildrenBySelf TVW, n, bCh
n = TVW.Nodes(n).Next.Index
Loop
TVW.Nodes(n).Checked = bCh
gCheckChildrenBySelf TVW, n, bCh
End If
End Sub' 根据同层、同父节点的选取情况,确定是否选取其父(乃至更上层),直至根节点
Private Sub gCheckParentBySibling(TVW As TreeView, ByVal curIndex As Integer)
Dim n As Integer
Dim bHaveChecked As Boolean If TVW.Nodes(curIndex).FirstSibling.Index = 1 Then
Exit Sub
Else
bHaveChecked = False
n = TVW.Nodes(curIndex).FirstSibling.Index
Do While n <> TVW.Nodes(curIndex).LastSibling.Index
If TVW.Nodes(n).Checked = True Then
bHaveChecked = True
Exit Do
End If
n = TVW.Nodes(n).Next.Index
Loop
If TVW.Nodes(n).Checked = True Then
bHaveChecked = True
End If
If bHaveChecked = True Then
TVW.Nodes(curIndex).Parent.Checked = vbChecked
Else
TVW.Nodes(curIndex).Parent.Checked = vbUnchecked
End If
gCheckParentBySibling TVW, TVW.Nodes(curIndex).Parent.Index
End If
End Sub