detecting and accessing a properties 'stored' value via RTTI

Graeme Geldenhuys9-10-2008 10:00 UTC

Hi,

I need to find out if I need to store a property value or note. The property is published and has the 'stored' directive / storage specifier.

I know how to test if the property value is equal to the propertie's default value. But how to I determine the default value if the storage specifier 'stored' is used?

eg:

  TMyObject = class(TPersistent)
  published
     property Prop1: boolean read FProp1 write FProp1 default True;
     property SomeProp: booleand
                read GetSomeProp
                write SetSomeProp
                stored IsSomePropStored;
  end;

I know how to handle 'Prop1', but don't know how to determine the default value or result of IsSomePropStored for the 'SomeProp' property.

Regards,
- Graeme -

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

Graeme Geldenhuys9-10-2008 10:49 UTC

to Graeme Geldenhuys

Graeme Geldenhuys wrote 5 lines

Hi, I need to find out if I need to store a property value or note. The property is published and has the 'stored' directive / storage specifier.

I think I found the solution. TypInfo.IsStoredProp() seems to do what I need.

Regards,
- Graeme -

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

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detecting and accessing a properties 'stored' value via RTTI