PRB: Treeview Node Visible Property Still True When Not Viewable (194033)

Microsoft Visual Basic Learning Edition for Windows 5.0

Microsoft Visual Basic Learning Edition for Windows 6.0

Microsoft Visual Basic Professional Edition for Windows 5.0

Microsoft Visual Basic Professional Edition for Windows 6.0

Microsoft Visual Basic Enterprise Edition for Windows 5.0

Microsoft Visual Basic Enterprise Edition for Windows 6.0

This article was previously published under Q194033

SYMPTOMS

When a node of a Treeview control is scrolled out of view, the Visible property of the node is still True.

CAUSE

The Visible property of the node indicates that the node is open and visible as part of the tree. It does not indicate if it is viewable in the viewport.

STATUS

This behavior is by design.

MORE INFORMATION

Steps to Reproduce Behavior

Create a new Standard EXE project in Visual Basic. Form1 is created by default.
Select Components from the Project menu. Check the box for "Windows Common Controls," and click OK.
Add a Treeview control to Form1.

Double-click on Form1 to bring up the code window and add the following code to Form1:

      Option Explicit

      Private Sub Form_Load()
          TreeView1.Width = 2200   ' so that node 4 is unseen
          TreeView1.Indentation = 750
          TreeView1.Nodes.Add , , , "Node1"
          TreeView1.Nodes.Add 1, tvwChild, , "Node1-1"
          TreeView1.Nodes.Add 2, tvwChild, , "Node1-1-1"
          TreeView1.Nodes.Add 3, tvwChild, , "Node1-1-1-1"
          TreeView1.Nodes(1).Expanded = True
          TreeView1.Nodes(2).Expanded = True
          TreeView1.Nodes(3).Expanded = True
          DoEvents
          Debug.Print TreeView1.Nodes(4).Visible
      End Sub

Run the project. Note that Node 4's Visible property is True even though the node is not visible through the viewport.

Modification Type:

Major

Last Reviewed:

5/13/2003

Keywords:

kbprb KB194033