Clear an edDateTime

Hello I have this problem:

I use a grid where the first column editor is a edDateTime: 
if I want compile this i select my date from the datapicker , but if I want delete a date i don't know how to do.
Someone can help me
By Paolo

This date picker is the Microsoft based TDateTimePicker control and this doesn't feature a blank date entry.

If you need to have an editing capability with blank date entry, try to use a FormControlEditLink combined with a TPlannerDatePicker. This date picker supports blank dates.