Collection textbox formatés(patricktoulon)Un DateBox avec masque de saisie V2.0

Option Explicit
Public Function control_keydown(tdat As Object, KeyCode, Optional mask As String = "dd/mm/yyyy", Optional charMASK As String = "_")
'MsgBox KeyCode
    Dim txt$, X&, plus&, longg&, sep$, mask2$
    'construction du masque de saisie(mask2) en fonction de la chaine de format de date injectée
    mask2 = Replace(Replace(Replace(mask, "d", charMASK), "m", charMASK), "y", charMASK)
    sep = Left(Replace(mask2, charMASK, ""), 1) 'determine le caractere de separation
    If tdat = "" Then tdat = mask2    'si textbox vide alors = mask2
    txt = tdat.Value: If txt = mask2 Then tdat.SelStart = 0: tdat = ""
    X = tdat.SelStart: longg = tdat.SelLength: If longg = 0 Then longg = 1
    If KeyCode = 8 And longg > 1 Then KeyCode = 46
    Select Case KeyCode
    Case 96 To 105
        If X = 10 Then KeyCode = 0: Exit Function
        If Mid(mask2, X + 1, 1) = sep Then X = X + 1
        Mid(txt, X + 1, longg) = Mid(mask2, X + 1, longg): tdat = txt: plus = IIf(KeyCode < 96, 32, -48):    'reformate si plus de 1 caractere selectionné
        Mid(txt, X + 1, 1) = Chr(KeyCode + plus): tdat = txt: tdat.SelStart = X + 1: KeyCode = 0
        If Mid(tdat, X + 2, 1) = sep Then tdat.SelStart = X + 2

        'control de validité de la date tapée a tout moment
        Dim Pos1&, Pos2&, Part1$, Part2$, Part3$, PosX&
        Select Case True    'determine les segment jours/mois/année  et les positions selstart SELON le format injecté
        Case Left(mask, 2) = "yy": Part2 = Mid(tdat, 6, 2): Part1 = Mid(tdat, 9, 2): Part3 = Mid(tdat, 1, 4): Pos1 = 8: Pos2 = 5: PosX = 8
        Case Left(mask, 2) = "mm": Part2 = Mid(tdat, 1, 2): Part1 = Mid(tdat, 4, 2): Part3 = Mid(tdat, 7, 4): Pos2 = 0: Pos1 = 3: PosX = 3
        Case Left(mask, 2) = "dd": Part1 = Mid(tdat, 1, 2): Part2 = Mid(tdat, 4, 2): Part3 = Mid(tdat, 7, 4): Pos1 = 0: Pos2 = 3: PosX = 3
        End Select

        'on ne peut depasser 31 pour les jours et 12 pour le mois quelque soit le format
        If Val(Part1) > 31 Or Val(Left(Part1, 1)) > 3 Or Part1 = "00" Then tdat.SelStart = Pos1: tdat.SelLength = 2: Beep: Exit Function
        If Val(Part2) > 12 Or Val(Left(Part2, 1)) > 1 Or Part2 = "00" Then tdat.SelStart = Pos2: tdat.SelLength = 2: Beep: Exit Function

        'quand jour et mois sont rempli on teste avec l'annéee 2000(année bissextile pour fevrier)et 30 ou 31 pour les autres mois
        If IsDate(Part1 & "/" & Part2) Then If Not IsDate(Part1 & "/" & Part2 & "/2000") Then tdat.SelStart = PosX: tdat.SelLength = 2: Beep

        If Not IsDate(tdat) And InStr(tdat, charMASK) = 0 Then    'si plus de caracteres mask on teste la date complete
            tdat.SelStart = InStrRev(tdat.Text, sep): tdat.SelLength = 4: Beep: Exit Function
        Else
            'pour pallier a l'erreur de isdate pour les année inferieur a 100 pour fevrier
            If IsDate(tdat) Then If Year(CDate(tdat)) <> Val(Part3) Then tdat.SelStart = InStrRev(tdat.Text, sep): tdat.SelLength = 4: Beep
        End If

    Case 8    'touche BACK (Retour en arrière)
        If X <> 0 Then Mid(txt, X, longg + 1) = Mid(mask2, X, longg + 1)
        tdat = txt: tdat.SelStart = X - 1: KeyCode = 0
        If tdat = mask2 Then tdat = ""
        If Mid(txt, X - IIf(X > 1, 1, 0), 1) = sep Then tdat.SelStart = X - 2
    Case 46 'touche Suppr(supprimer)
    Mid(txt, X + 1, longg) = Mid(mask2, X + 1, longg): KeyCode = 0: tdat = txt: tdat.SelStart = X    'touche Suppr

    Case 37: tdat.SelStart = X - 1    'touche fleche gauche
    Case 39: tdat.SelStart = X + 1    'touche fleche droite

    Case 13 Or 9    ' ce que l'on veux c'est la sortie

    Case Else: KeyCode = 0    'touche les autres touches sont exclues
    End Select

End Function

Private Sub TextBox1_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
    control_keydown TextBox1, KeyCode, "yyyy-mm-dd", "_"
End Sub

Private Sub TextBox2_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
    control_keydown TextBox2, KeyCode, "mm/dd/yyyy", "_"
End Sub

Private Sub TextBox3_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
    control_keydown TextBox3, KeyCode, "dd/mm/yyyy", "_"
End Sub

Private Sub TextBox4_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
    control_keydown TextBox4, KeyCode 'argument omis donc par defaut"dd/mm/yyyy" mask"__/__/____"
End Sub
Private Sub TextBox5_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
    control_keydown TextBox5, KeyCode, "dd mm yyyy"
End Sub