Re: [DUG] (no subject)

[Phil Middlemiss]

TInterfaceList is descended from TInterfacedObject, so it needs to be referenced with an interface to keeps it's reference count above 0 - else it will be destroyed along with all the objects it contains. eg, TMyObject = class(TObject) private   FInterfaceList : IInterfaceList; public   constructor create; end; constructor TMyObject.create; begin   FInterfaceList := TInterfaceList; // automatic typecast to IInterfaceList end; Conor Boyd wrote: Can you clarify that for me?   Why does it *need* to be referenced with an IInterfaceList?   I've just started using a  TInterfaceList to hold references to interfaces, but I don't see why I have to use interfaces WRT the list itself?   Having said that, I have an issue where I have to explicitly call _AddRef on the interface I'm adding to my interfacelist to keep it alive.  Could these two things be related?   Grateful for your thoughts...   C. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Phil Middlemiss   No, it wasn't a typo - he needs to *create* a TInterfaceList - but that list needs to be *referenced* with an IInterfaceList. It was intentional to force Thomas to look up how to end up with a working IInterfaceList. Conor Boyd wrote: I'm sure it was just a typo, but it should be a TInterfaceList instead of a TList.   Cheers,   Conor From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Phil Middlemiss   [snip]   You should also be adding it to an IInterfaceList instead of a TList. [snip] _______________________________________________ Delphi mailing list Delphi@ns3.123.co.nz http://ns3.123.co.nz/mailman/listinfo/delphi

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