On Sun, 14 Nov 2010, Frank Church wrote:
Does TObject have all the capabilities of TComponent apart from things like
streaming and being used from the IDE component palette?
I want to create an object which has all the capabilities like getting and
setting properties, and I want to know whether I need to
inherit from TObject or from something further down the hierarchy.
If you need published properties (RTTI) then you can descend from TPersistent.
Or, you create a class that descends from TObject, for instance TRTTIObject
and compile it under {$M+}, and derive all your objects from that.
Another aspect is ownership. Does ownership require objects to be derived from
TComponent?
Yes. Unless you care to re-implement the TComponent behaviour.
Is a TPersistent adequate if manipulating the object from the IDE isn't needed?
Yes.
Last but not the least, is the FreePascal TObject/TComponent system more or
less the same as Delphi's, or are there some major
differences?
It is the same. At least we try very hard to keep it so :-)
Michael.
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