Library tutorials & articles
TreeView Control
TreeView Styles
The TreeView control has a number of properties that changes the way it looks. A few are discussed below.
Indentation - Sets the amount distance between a node and its children.
BorderStyle - Sets the style of the border. Either ccNone (no border) or ccFixedSingle (single border)
Appearance - Sets the appearance of the TreeView control. Either cc3D (3D style appearance) or ccFlat (flat appearance)
LineStyle - Sets the line style. Either tvwRootLines (lines come from the very top) or tvwTreeLines (lines come from each item at the top level). The best way to see this is to try it at home!
Style - Sets the treeview style. Can be set to one of the following:
tvwTextOnly - Only text is displayed. No treelines, images or plus/minus's
(expand/shrink) are displayed
tvwPictureText - Text and pictures are displayed. No treelines or plus/minus's.
tvwPlusMinusText - Text and plus/minus's are displayed. No treelines or images.
tvwPlusPictureText - Text, plus/minus's and images are displayed. No treelines.
tvwTreelinesText - Text and treelines are displayed. No images or plus/minus's.
tvwTreelinesPictureText - Text, images and treelines are displayed. No plus/minus's
tvwTreelinesPlusMinusText - Text, treelines and plus/minus's are displayed. No images
tvwTreelinesPlusMinusPictureText - Text, treelines, plus/minus's and images are all
displayed.
Please note that you need to assign an image to each item for an image to be displayed.
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I tried your treeview example and when I try to add and image it is telling me that I need to initilaize the image first. Can you tell me what that means and how to fix it
I tried this and recieved the following: Compile error: variable not defined..."TreeView" is highlited...anyone have any ideas?
gabriel medina
gxsoft@hotmail.com
http://www.pldental.com
Hi,
Found this very good tutorial because its nearly exact the problem i have with my TreeView,...
...but unfortunatly, i can't get it to work...
Set the same settings like in the tutorial, but nothing happens.
I try to drag and drop, but it seems, there is no action by the script,...
Any suggetions, what my failure could be?
Thanx for help
LittleMik
Enjoyed the piece on drag and drop treeview.
I use VS6 under XP and in that environment the DataObject declaration is
Data As MSComctl2.DataObject
rather than the reference in the posting
Hyperlink to articles on DataSource and imagelist would be handy but they are both documented in MSDN if you throw the rigth incantation at it.
Nigel
Just what i needed for a contact list im doing for my MSN Clone. Excellent!
Can this be implemented using ASP pages as well?
Thanks.
I hope someOne found this useful
Private Sub Form_Load()
With TreeView1
.Style = tvwTreelinesPlusMinusPictureText
.LineStyle = tvwRootLines
.PathSeparator = "\"
.Indentation = Screen.TwipsPerPixelX * 5 '256
.LabelEdit = tvwManual
.SingleSel = False
.HideSelection = False
.ImageList = ImageList1
.Refresh
End With
Call ShowEstructure
End Sub
Private Sub ShowEstructure()
Dim i As Byte
Dim j As Byte
Dim k As Byte
Dim Max As Byte
Dim sp As String
Dim sh As String
Dim sh2 As String
Dim TotalSecciones As Byte
Dim TotalPosiciones As Byte
Dim rsSeccions As New ADODB.Recordset
Dim rsPositions As New ADODB.Recordset
TreeView1.Nodes.Clear
Set grsGral = New ADODB.Recordset
grsGral.Open "EXEC spSQL_ShowDepartments", gConnectionString, adOpenStatic, adLockReadOnly, 1
Max = grsGral.RecordCount
For i = 1 To Max
'Actual Node
sp = "nodo" & CStr(i)
TreeView1.Nodes.Add , , sp, grsGral.Fields(1).Value, 1
grsGral.MoveNext
Next
grsGral.MoveFirst
For i = 1 To Max
' leaf
sp = "nodo" & CStr(i)
Set rsSeccions = New ADODB.Recordset
rsSeccions.Open "EXEC spSQL_ShowSeccions_forThis '" & grsGral.Fields(0).Value & "'", gConnectionString, adOpenStatic, adLockReadOnly, 1
TotalSecciones = rsSeccions.RecordCount
For j = 1 To TotalSecciones
' relative son
sh = sp & "-" & CStr(j) 'j
TreeView1.Nodes.Add sp, tvwChild, sh, rsSeccions.Fields(0).Value, 2
'*-*-*-
Set rsPositions = New ADODB.Recordset
rsPositions.Open "EXEC spSQL_ShowPositions_forThis '" & rsSeccions.Fields(1).Value & "'", gConnectionString, adOpenStatic, adLockReadOnly, 1
TotalPosiciones = rsPositions.RecordCount
For k = 1 To TotalPosiciones
' La clave del nodo hijo, relativo al nodo sP
sh2 = sh & "-" & CStr(k) 'j
TreeView1.Nodes.Add sh, tvwChild, sh2, rsPositions.Fields(0).Value, 3
rsPositions.MoveNext
Next
Set rsPositions = Nothing
'*--*-*-
rsSeccions.MoveNext
Next
Set rsSeccions = Nothing
grsGral.MoveNext
Next
Set grsGral = Nothing
End Sub
Hoped to find some example using directories and files...
Sorry, I went back and read it more closely. I just had to play around with the ImageList control to make it work.
I might have missed it, but I would have liked to have seen how to use images without having to go to the imagelist tutorial. I know you mentioned imagelist, but perhaps a brief explanation of using the imagelist control with TreeView would have been in order. If I missed it, I apologize. Thank you for a very helpful tutorial.
This thread is for discussions of TreeView Control.