minor functions

I would like to have following ones:

  1. option to have blank date, with no text in date field
  2. divide events to onCheckBoxClick and onDateAreaClick - I need to control enabling and disabling these parts per parts.

Specify AdvDBDateTimePicker.NullDataDate = 31/12/1899 for example, set AdvDBDateTimePicker.Date = 31/12/1899 and then set AdvDBDateTimePicker.NullDateFormat = ' '; , then this will be displayed as blank.

This feature was implemented.