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How to: Change the Column Widths of a Multi-Column List Box

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Outlook Developer Reference

The following example uses the ColumnWidths property to change the column widths of a multicolumn ListBox. The example uses three TextBox controls to specify the individual column widths and uses the Click event to specify the units of measure of each TextBox.

To use this example, copy this sample code to the Script Editor of a form. To run the code you need to open the form so the Open event will activate. Make sure that the form contains:

  • A ListBox named ListBox1.
  • Three custom text fields named Text1, Text2, and Text3.
  • Three TextBox controls named TextBox1, TextBox2, and TextBox3 that are bound to the custom text fields above.
  • A CommandButton named CommandButton1.

Try entering the value 0 to hide a column.

  Dim MyArray(2, 3) 
Dim ListBox1
Dim TextBox1
Dim TextBox2
Dim TextBox3
Dim CommandButton1

Sub Item_Open()
Dim i, j, Rows


Set ListBox1 = Item.GetInspector.ModifiedFormPages("P.2").ListBox1
Set TextBox1 = Item.GetInspector.ModifiedFormPages("P.2").TextBox1
Set TextBox2 = Item.GetInspector.ModifiedFormPages("P.2").TextBox2
Set TextBox3 = Item.GetInspector.ModifiedFormPages("P.2").TextBox3
Set CommandButton1 = Item.GetInspector.ModifiedFormPages("P.2").CommandButton1


ListBox1.ColumnCount = 3
Rows = 2


For j = 0 To ListBox1.ColumnCount - 1
For i = 0 To Rows - 1
MyArray(i, j) = "Row " & i & ", Column " & j
Next
Next


ListBox1.List() = MyArray           'Load MyArray into ListBox1


TextBox1.Text = "1 in"              '1-inch columns initially
TextBox2.Text = "1 in"
TextBox3.Text = "1 in"


End Sub


Sub CommandButton1_Click()
'ColumnWidths requires a value for each column separated by semicolons
ListBox1.ColumnWidths = TextBox1.Text & ";" & TextBox2.Text & ";" & TextBox3.Text
End Sub


Sub Item_CustomPropertyChange(ByVal Name)
msgbox Name
Select Case Name
Case "Text1"
'ColumnWidths accepts points (no units), inches or centimeters; make inches the default
If Not (InStr(TextBox1.Text, "in") > 0 Or InStr(TextBox1.Text, "cm") > 0) Then
TextBox1.Text = TextBox1.Text & " in"
End If
Case "Text2"
'ColumnWidths accepts points (no units), inches or centimeters; make inches the default
If Not (InStr(TextBox2.Text, "in") > 0 Or InStr(TextBox2.Text, "cm") > 0) Then
TextBox2.Text = TextBox2.Text & " in"
End If
Case "Text3"
'ColumnWidths accepts points (no units), inches or centimeters; make inches the default
If Not (InStr(TextBox3.Text, "in") > 0 Or InStr(TextBox3.Text, "cm") > 0) Then
TextBox3.Text = TextBox3.Text & " in"
End If
End Select
End Sub