Xiangrong Fang schrieb:
Hi,
I am reading this:
http://wiki.freepascal.org/How_To_Use_Interfaces
And wondering what's the *purpose* of "reference counting"?
Delphi (and FPC) implements garbage collection by reference counting.
It's used in all dynamic (managed) datatypes, like arrays, interfaces,
AnsiStrings...
While I use
interface before in delphi and java, I didn't notice that I need a UUID
for interface. I had an impression that it has something to do with COM?
Right, an UUID/GUID for interfaces is Windows COM specific.
So, what is the purpose of this UUID and the method provided by
TInterfacedObject?
The GUID allows to look up the interface definition when a type library
(*.TLB) exists (on a Windows platform).
DoDi
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