I want to use masked.textctrl that users can input a valid date and time like 1982/06/02 17:01:33.I find a simple example in the demo,but I don’t know how I can validate the date,especially for the day part of the date ,if I need judge how many days in the the year and month I announce by myself?By the way, I find a “D” parameter in the formatcodes,but I don’t know how to use it for use,can any one tell me or give me a example,thanks