[fpc-pascal] Can I define a custom "simple" type for my applications?

[Graeme Geldenhuys]

Hi,

I need a "new" boolean type in my applications that support three
values. True, False and Null.  Null value means undefined and has
various uses and gets handled differently to True or False.  Is this
possible in Free Pascal?


Regards,
  - Graeme -


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fpGUI - a cross-platform Free Pascal GUI toolkit
http://opensoft.homeip.net/fpgui/