how to disable events in treeview

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  7 years ago

  by aimar_20

  aimar_20

  , United States

  Joined 7 years ago
  hello, I want to disable de double click event in treeview.
  
  The reason is that I don't want that when you do double click over a node, automatically unfolds a child node, and I don't want this.
  
  how I can do that when I do double click in a node, don't occurs anything?
  
  
  Thanks
  
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  7 years ago

  by Bigbeanpole

  Kaleb

  Edmonton,Alberta,Canada, Canada

  Joined 7 years ago

  I'm not entirely sure what you could do with this but there is a doubleclick event for the treeview control
  

  
  

  Code:

     Private Sub TreeView1_DoubleClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.DoubClick
  

  
     End Sub
  

  
  

  
  Maybe there is a way not to do anything with the childnode from this?
  

  
  HTH
  

  
  Kaleb

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  7 years ago

  by jmcilhinney

  John McIlhinney

  Sydney, Australia

  Joined 7 years ago

  That's the way the TreeView is supposed to work.  I'd say that you would have to create your own class that inherits from the TreeView class and override the current double-click behaviour.

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  7 years ago

  by aimar_20

  aimar_20

  , United States

  Joined 7 years ago

  I think that the behaviour when I do double click in a node, doesn't is a event, I think that is a property of the treeview, but I don't find this property.
  

  
  I think this because if add code in the double click event, when I do double click in a node, a childnode is expanded and the code of the event is executed.
  

  
  

  
  Thanks

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  7 years ago

  by rübezahl

  rübezahl

  , United States

  Joined 7 years ago

  ' No Double-Click
  

  
  Protected bDoubleClick as boolean
  

  
  Private Sub treStructure_BeforeExpand(ByVal sender As   System.Object, ByVal e As       System.Windows.Forms.TreeViewCancelEventArgs) Handles treStructure.BeforeExpand
  

  
    If bDoubleClick Then
      bDoubleClick = False
      e.Cancel = True
    End If
  

  
  End Sub
  

  
  Private Sub treStructure_MouseDown(ByVal sender As System.Object, ByVal e As             System.Windows.Forms.MouseEventArgs) Handles treStructure.MouseDown
    Dim xNode As TreeNode
  

  
    If e.Button = MouseButtons.Left Then
      xNode = treStructure.GetNodeAt(e.X, e.Y)
      If Not xNode Is Nothing Then
        If Not xNode.IsExpanded And xNode.GetNodeCount(False) > 0 Then
          If e.Clicks = 2 Then
            bDoubleClick = True
          End If
        End If
      End If
    End If
  

  
  End Sub

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