Create a multi-column lisbox using tabs

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Create a multi-column lisbox using tabs!
Assumes:'NOTES: Before calling, you must fill the TabStop array with the number of tab stops desired

EXAMPLE:To Call:
Dim mystring As String
ReDim Preserve TabStop(0)
TabStop(0) = 10
ReDim Preserve TabStop(1)
TabStop(1) = 20
ReDim Preserve TabStop(2)
TabStop(2) = 30
mystring = Text1 & Chr$(9) & Text2 & Chr$(9) & Text3 & Chr$(9) & Text4
Call AddItemCol(List1, mystring, TabStop)

'------------------------------------------------------- API -----------------------------------------------------------------

If Win16 Then
Private Declare Function GetFocus Lib "User" Alias "Getfocus" () As Integer
Private Declare Function GetDialogBaseUnits Lib "User" () As Long
Private Declare Sub SendMessage Lib "User" (ByVal hwnd As Integer, ByVal wMsg As Integer, ByVal wParam As Integer, lParam As Any)
Private Declare Sub SetFocusAPI Lib "User" Alias "SetFocus" (ByVal hwnd As Integer)
#Else
Private Declare Function GetFocus Lib "user32" () As Long
Private Declare Function GetDialogBaseUnits Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function SetFocusAPI Lib "user32" Alias "SetFocus" (ByVal hwnd As Long) As Long
#End If

Const WM_USER = &H400
Const LB_SETTABSTOPS = WM_USER + 19
Public TabStop() As Integer

'------------------------------------------------------------------------------------------------------------

Attribute VB_Name = "MODaddListCol"

Public Function AddItemCol(ByVal cListBox As Control, sItem2Add As String, vTabStopArray As Variant) As Boolean
AddItemCol = True
Dim OldHandle As Long
Dim ListHandle As Long
Dim DlgWidthUnits As Long
Dim I As Integer
'Get Handle of original active control
OldHandle = GetFocus()
'Set focus to ListBox
cListBox.SetFocus
'Get the handle of the listbox
ListHandle = GetFocus()
'Get the Dialog Width Units
DlgWidthUnits = (GetDialogBaseUnits() Mod 65536) / 2

'Calculate tab stops
For I = 0 To UBound(vTabStopArray)
TabStop(I) = TabStop(I) * DlgWidthUnits
Next I
'set tab stops
Call SendMessage(ListHandle, LB_SETTABSTOPS, UBound(vTabStopArray), TabStop(0))
'Set focus back to original active control
Call SetFocusAPI(OldHandle)
'Add the item to the listbox
cListBox.AddItem sItem2Add
End Function

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