TreeNode.Handle 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

來源:

TreeNode.cs

取得樹節點的 handle。

public:
 property IntPtr Handle { IntPtr get(); };

[System.ComponentModel.Browsable(false)]
public IntPtr Handle { get; }

[<System.ComponentModel.Browsable(false)>]
member this.Handle : nativeint

Public ReadOnly Property Handle As IntPtr

屬性值

IntPtr

nativeint

樹節點的handle。

屬性

BrowsableAttribute

範例

以下程式碼範例取得 TreeNode that was collapped，並利用其 Handle 屬性建立其副本。 原件 TreeNode 會從 中移除 TreeNodeCollection，並將副本加入收藏。 這個例子需要你有一個 Form 控制 TreeView 點。 TreeView控制項應有兩個或以上根節點，每個根節點至少有一個子節點。

private:
   void treeView1_AfterCollapse( Object^ /*sender*/, TreeViewEventArgs^ e )
   {
      // Create a copy of the e.Node from its Handle.
      TreeNode^ tn = TreeNode::FromHandle( e->Node->TreeView, e->Node->Handle );
      tn->Text = String::Concat( tn->Text, "Copy" );

      // Remove the e.Node so it can be replaced with tn.
      e->Node->Remove();

      // Add tn to the TreeNodeCollection.
      treeView1->Nodes->Add( tn );
   }

private void treeView1_AfterCollapse(object sender, TreeViewEventArgs e)
{
   // Create a copy of the e.Node from its Handle.
   TreeNode tn = TreeNode.FromHandle(e.Node.TreeView, e.Node.Handle);
   tn.Text += "Copy";
   // Remove the e.Node so it can be replaced with tn.
   e.Node.Remove();
   // Add tn to the TreeNodeCollection.
   treeView1.Nodes.Add(tn);
}

Private Sub treeView1_AfterCollapse(sender As Object, _
  e As TreeViewEventArgs) Handles treeView1.AfterCollapse
   ' Create a copy of the e.Node from its Handle.
   Dim tn As TreeNode = TreeNode.FromHandle(e.Node.TreeView, e.Node.Handle)
   tn.Text += "Copy"
   ' Remove the e.Node so it can be replaced with tn.
   e.Node.Remove()
   ' Add tn to the TreeNodeCollection.
   treeView1.Nodes.Add(tn)
End Sub

備註

如果在該屬性被引用時 Handle 尚未建立一個句柄，則該屬性已被建立。