Sub Bouton1_QuandClic()
Dim i As Integer
ActiveSheet.Unprotect
For i = 1 To Range('d65536').End(xlUp).Row
If Cells(i, 4).Value <> 'OUI' Then
Rows(i).Locked = False
Else
Rows(i).Locked = True
End If
Next i
ActiveSheet.Protect
End Sub