Private Sub CommandButton1_Click()
Dim t As Boolean, s As Shape
t = CommandButton1.Caption Like "Afficher*"
CommandButton1.Caption = IIf(t, "Masquer", "Afficher") & " les commentaires"
Application.DisplayCommentIndicator = t
For Each s In Me.Shapes
If s.Name <> "CommandButton1" Then s.Visible = t
Next
End Sub