> On Sep 6, 2017, at 10:20 PM, Sven Barth via fpc-pascal 
> <fpc-pascal@lists.freepascal.org> wrote:
> 
> You're missing that FHook was declared as IHook, not THook.
> 

In terms of memory why does it matter how it was declared? The memory was 
allocated in Create() so the declaration is just relevant for the assignment of 
the new memory. Is FPC doing something magic behind the scenes?

Regards,
        Ryan Joseph

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