FinancialEF.cc

A custom numeric entryfield intended for financial use with:

   Right hand numeric entry and display
          
   No mouse selection of it's contents allowed

   SelectAll = true type behaviour

   No decimal point entry required

   Digits entered or deleted move accross the decimal point as required

   Data format is validated and constricted by the EntryField picture
   property if there is one, otherwise by the properties of the
   datalinked field.

   Automatic formatted zero insertion if the first entered character is
   a decimal point or a minus sign.

Backspace key deletes most recently entered character.

Ordinary delete key deletes the whole entry.

On opening the control creates it's own Text control which covers the
EntryField. This prevents user mouse access to the EntryField itself,
and is used to display the control contents.