Coding the different buttons in a standard toolbar

Where do you find information on coding the different buttons on a toolbar. For instance a button that centers one line of text (maybe a Title) rather than the whole document. I have been searching the internet and help files in vb but there is very little in the way of actual coding when it comes to each individual button. Can anyone get me on the right track?

This is from a project i was recently working on

Code:

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Private Sub Toolbar1_ButtonClick(ByVal Button As MSComctlLib.Button)
   
    '-----------------------------------------------------'
    'This sub deals with a click on any of the tool bar  '
    'buttons.  We differentiate between buttons with the  '
    'Key property of the button that has been clicked    '
    '-----------------------------------------------------'
   
    On Error GoTo toolBarError
   
    Select Case Button.Key
      Case Is = "Edit"
        edit_View_Mode (False)
      Case Is = "View"
        edit_View_Mode (True)
      Case Is = "Tariff"
        mnuViewTariff_Click
      Case Is = "Products"
        If goto_Selected_Screen("products", Me) = True Then
          frmProducts.Show , frmTreeView
        End If
     
      Case Is = "Back"
        moveBackScreen
    End Select
   
    Exit Sub
   
toolBarError:
    Dim lResult As Long
   
    lResult = formsErrorHandler("ToolBar Error :")

End Sub

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