Function TesteLien$(c As Range)
Dim f$
f = c.Formula
If Not f Like "=HYPERLINK(*)" Then Exit Function
f = Mid(f, 12)
f = Left(f, InStrRev(f, ",") - 1)
TesteLien = "Le fichier du lien " & IIf(Dir(Evaluate(f)) = "", "n'existe pas", "existe")
End Function