mocking interface with events

Hello,

I can mock successfully an Interface when it contains only properties and methods; but when adding an event declaration it causes an error.

Code of the class that is tested:

Public Class EcranControleur
   Implements IEcran

   Private WithEvents monAfficheur As IEcran
   Public Sub New(ByVal afficheur As IEcran)
      monAfficheur = afficheur    ' => CAUSES ERROR BECAUSE OF THE "WithEvents"
      [...]
   End Sub
End Class

The error details in NUnit-gui gives me :

at TypeMock.Mock.a(String A_0, Object[] A_1, Object A_2, Object A_3, Int32 A_4)
at ao.a(String A_0, Object[] A_1, Object A_2, Object A_3)
at TypeMock.MockManager.a(String A_0, String A_1, Object A_2, Object A_3, Object[] A_4)
at TypeMock.InternalMockManager.getReturn(Object that, String typeName, String methodName, Object methodParameters, Object p1)
at MockIEcran.add_DébutCréationGrille(DébutCréationGrilleEventHandler )
at Stepware.Sudoku.Logique.EcranControleur.set_monAfficheur(IEcran WithEventsValue)
at Stepware.Sudoku.Logique.EcranControleur..ctor(IEcran afficheur) in D:DevSudoku2IHMEcranControleur.vb:line 11
at Stepware.Sudoku.Logique.EcranControleurTest.DébutTest() in D:DevSudoku2IHMEcranControleurTest.vb:line 26
--TearDown
[...]

The issue seems to be an unexpected call to "MockIEcran.add_DébutCréationGrille" when it tries to add a reference to an event handler.

How can I do?

Thanks a lot.