On Saturday 16 January 2010 01:30:53 pm Jacek Kałucki wrote:
> Użytkownik John napisał:
> > On Saturday 16 January 2010 12:14:46 pm Jacek Kałucki wrote:
> >> Hi,
> >>
> >> How can I enter null/empty date into dDateTextBox?
> >
> > I don't believe you can. Once the control accepts focus it demands a
> > valid date. I have played with the idea of allowing '<None>' but
> > discovered that I did not require it in the end.
>
> But I must. I have field meaning effective order date,
> which can be filled only when order is really completed.
I assume that the order date is filled in by the user and not by some program
trigger. How about doing something like the following (untested):
bindEvent(dEvents.LostFocus, self.Form._checkDate)
def _checkDate(self,evt):
""" check if it's a date here OR A STRING"""
#This gets around it being blank
start_value = evt.EventObject.Value
if evt.EventObject.Value == None:
evt.EventObject.Value = None
return
#the user typed in something is it a date or string
if not isinstance(evt.EventObject.Value, datetime.date):
if isinstance(evt.EventObject.Value, basestring):
evt.EventObject.Value = None
evt.EventObject.setFocus()
return
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