Sub test()
Dim chemin$, fichier$, feuille$, cellule As Range
chemin = "C:\Users\polux\Desktop"
fichier = "hhhhhtml.xls"
feuille = "Feuil1"
Set cellule = Range("c4")
MsgBox GetVal_on_closed_fich(chemin, fichier, feuille, cellule)
End Sub
Function GetVal_on_closed_fich(ByVal chemin As String, ByVal fichier As String, ByVal feuille As String, cel As Range) As String
Dim Rc$
Rc = "R" & cel.Row & "C" & cel.Column
GetVal_on_closed_fich = ExecuteExcel4Macro("'" & chemin & "\[" & fichier & "]" & feuille & "'!" & Rc)
End Function