XL 2013 Trie alphabetique une zone de liste

Option Compare Text 'la casse est ignorée

Private Sub Worksheet_Change(ByVal Target As Range)
Dim a
a = Application.Transpose([A1].CurrentRegion.Columns(1)) 'vecteur ligne
tri a, 1, UBound(a)
ListBox1.List = a
End Sub

Sub tri(a, gauc, droi) ' Quick sort
Dim ref, g, d, temp
ref = a((gauc + droi) \ 2)
g = gauc: d = droi
Do
    Do While a(g) < ref: g = g + 1: Loop
    Do While ref < a(d): d = d - 1: Loop
    If g <= d Then
      temp = a(g): a(g) = a(d): a(d) = temp
      g = g + 1: d = d - 1
    End If
Loop While g <= d
If g < droi Then Call tri(a, g, droi)
If gauc < d Then Call tri(a, gauc, d)
End Sub

Private Sub Worksheet_Change(ByVal Target As Range)
Application.ScreenUpdating = False
Application.EnableEvents = False 'désactive les évènements
Columns(1).Copy Columns(2) 'copier-coller
Columns(2).Hidden = True 'masque
Columns(2).Sort Columns(2), xlAscending, Header:=xlNo 'tri
Application.EnableEvents = True 'réactive les évènements
Shapes("Zone de liste 1").ControlFormat.ListFillRange = "$B$1:$B$" & Range("B" & Rows.Count).End(xlUp).Row
End Sub