Private Sub UserForm_Activate()
trois_boutons
End Sub
Private Sub trois_boutons()
Dim hwnd&
hwnd = ExecuteExcel4Macro("CALL(""user32"",""GetActiveWindow"",""JCC"")") 'api GetActiveWindow
ExecuteExcel4Macro ("CALL(""user32"",""SetWindowLongA"",""JJJJJ""," & hwnd & ", " & -16 & ", " & &H94CF0080 & ")") 'api SetWindowLongA
End Sub