Private Sub Worksheet_BeforeRightClick(ByVal Target As Range, Cancel As Boolean)
'
Dim MesCellules As Range
If Target.Count > 1 Then Exit Sub
Set MesCellules = Range("R3,R5,R7,R9,R11,R13,R15,R17,R19,T3,T5,T7,T9,T11,T13,T15,T17,T19")
If Intersect(Target, MesCellules) Is Nothing Then Exit Sub
Cancel = True
UFcalendrier.Show '0
End Sub