c assez simple, tu fai une variable ki contien un numéro :
essay ca:
Dim Num As Integer
Private Sub Command1_Click()If Num 0 Then Num 1 Else Num = 0
End Sub
Private Sub Command2_Click()If Num 2 Then Beep Else Num 0
End Sub
Private Sub Command3_Click()If Num 1 Then Num 2 Else Num = 0
End Sub