لإنهاء صلاحيات برنامجك التجريبي بعد30 يوماً فقط

Dim startdate As String
Dim differenceofdate
Dim TRACEDATE As String
Dim newdate
Dim chk

If GetSetting(App.Title, "Startup", "counter", "") = "" Then
SaveSetting App.Title, "Startup", "counter", 1
SaveSetting App.Title, "Startup", "Started", Format(Date, "mm dd yyyy")
SaveSetting App.Title, "Startup", "Last Used", Format(Date, "mm dd yyyy")
lblcnt.Caption = "1"

ElseIf GetSetting(App.Title, "Startup", "counter", "") = "31" Then

MsgBox "شكراً لستخدامك هذا البرنامج " & Chr(10) + Chr(1) & "الرجاء إيقاف عمل هذا البرنامج او سيتم فقدان كل المعلومات التي قمت بإدخالها ", vbCritical, "شكراً لك "

End

Else
TRACEDATE = GetSetting(App.Title, "Startup", "Last Used", "")
chk = DateDiff("d", CDate(TRACEDATE), Now)
If chk < 0 Then 'CHECK IF THE DATE WAS CHANGE which is lesser than the PREVIOUS DATE WHERE THE SYSTEM USED.

MsgBox "لم يتم العثور على تاريخ النظام لديك !! " & Chr(10) + Chr(13) & " الرجاء تغييرة الأن وإلا لن يكون بإمكانك إستخدام هذا البرنامج لاحقاً", vbCritical, "تاريخ مفقود"

End
Else
startdate = GetSetting(App.Title, "Startup", "Started", "")
differenceofdate = DateDiff("d", startdate, Now)
If differenceofdate <> 0 Then
lblcnt.Caption = differenceofdate + 1
SaveSetting App.Title, "Startup", "Last Used", Format(Now, "MM DD YYYY")
SaveSetting App.Title, "Startup", "counter", differenceofdate + 1
End If
If differenceofdate = 0 Then
lblcnt.Caption = GetSetting(App.Title, "Startup", "Counter", "")
End If
End If
End If
End Sub