>>>>Why cannot you to use StrictDateEntry = 1 ?
>>>
>>>I wanted to build my own date validation. E.g. we have SET NOTIFY OFF, so if you enter the wrong value, you would be stuck in the control without even knowing why.
>>
>>I see.
>>This is a design bug ( one of the most serious )
>>caused by the fact that VFP doesn't have an event BeforeValid that
>>it happens before the value is accepted (and writing in the controlSource).
>>
>>use a character datetime
>
>Ok, I'll build a different class for datetime. Or do you think I can adjust the current class and do it in cases?

You can adjust the current class easily.