Modifier macros d'un classeur protégé

'Protéger et déprotéger le projet d'un classeur
'par macro
'Code de Bill Manville
'diffusé sur mpfe par papou

Sub TestProtect()
ProtectVBProject Workbooks("Proteger_deproteger.xls"), "Jack"
End Sub

Sub TestUnprotect()
UnprotectVBProject Workbooks("Proteger_deproteger.xls"), "Jack"
End Sub

Sub UnprotectVBProject(WB As Workbook, ByVal Password As String)
Dim vbProj As Object

Set vbProj = WB.VBProject

'can't do it if already unlocked!
If vbProj.Protection <> 1 Then Exit Sub

Set Application.VBE.ActiveVBProject = vbProj

' now use lovely SendKeys to quote the project password
SendKeys Password & "~~"
Application.VBE.CommandBars(1).FindControl(ID:%78,
recursive:=True).Execute
End Sub

Sub ProtectVBProject(WB As Workbook, ByVal Password As String)
Dim vbProj As Object

Set vbProj = WB.VBProject

'can't do it if already locked!
If vbProj.Protection = 1 Then Exit Sub

Set Application.VBE.ActiveVBProject = vbProj

' now use lovely SendKeys to set the project password
SendKeys "+{TAB}{RIGHT}%V{+}{TAB}" & Password & "{TAB}" & _
Password & "~"

Application.VBE.CommandBars(1).FindControl(ID:%78,
recursive:=True).Execute

WB.Save
End Sub