tAdvdbDatetimepicker not really usable if date field may be null

VCL TMS VCL UI Pack
1

Hello TMS team,

I'm currently trying to phase out a component pack of the competition (LMD) for its poor high-dpi support and replacing it by TMS VCL UIPack but I find the tAdvDBDatetimepicker component to be a show stopper.

I find no way to make tAdvDBDatetimepicker behave nicely if the attached database field may be null. There's some intuitive behavior missing that I always took for granted with LMD components, like simply being able to press the [del] key to make the input appear blank. Or that the input of a [null] field stays blank until the user starts typing or clicking.

2

The main reason here is that this descends from the standard VCL TDateTimePicker that doesn't have support for null date fields represented by an empty value (string).
TDateTimePicker uses a checkbox to indicate a null field or not (when needed).
A possible alternative is to use the TDBPlannerDatePicker that allows to have empty text.