Knowledge Base

PRB: Treeview Node Visible Property Still True When Not Viewable

Article ID: 194033

Article Last Modified on 5/13/2003


APPLIES TO


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

  1. Create a new Standard EXE project in Visual Basic. Form1 is created by default.
  2. Select Components from the Project menu. Check the box for "Windows Common Controls," and click OK.
  3. Add a Treeview control to Form1.
  4. 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
    
    						
  5. Run the project. Note that Node 4's Visible property is True even though the node is not visible through the viewport.

Additional query words: kbDSupport kbDSD kbVBp kbVBp500 kbVBp600 kbCtrl kbTreeView

Keywords: kbprb KB194033