[Lazarus] How to cast a Interface to a Object in Lazaeus

[aradeonas]

So then how can I add them in a list?In the end I want add video and
audio files in one list together.

Regards,
Ara

On Thu, Mar 12, 2015, at 09:26 AM, Lukasz Sokol wrote:
> Please avoid top-posting unless you have a grave reason for it 
> (like screen reader requirement).
> 
> On 12/03/15 15:56, aradeonas wrote:
> > I'm still don't get how  cast interface in Lazarus.
> > 
> > Regards,
> > Ara
> > 
> 
> I think (I'm a noob here too)
> what Marcos, Michael and Graeme want to say, is
> 
> - first declare Interfaces, inheriting from those you want,
> 
> (namely IVideoFile, IAudioFile with appropriate get/set methods)
> 
> - then make IFile inherit from the above and from IUnknown, not the other
> way round
> 
> (hope I got that right /)  )
> 
> el es
> 
> > On Thu, Mar 12, 2015, at 05:56 AM, aradeonas wrote:
> >> I can get what you mean,Can you explain more?
> >> For example when I want to store video and audio in one list how can I
> >> do that?
> >>
> >> Regards,
> >> Ara
> >>
> >> On Thu, Mar 12, 2015, at 05:42 AM, Graeme Geldenhuys wrote:
> >>> On 2015-03-12 12:35, Michael Van Canneyt wrote:
> >>>> Your problem is that you mix an interface with a non-interface approach.
> >>>
> >>> +1
> >>> And my thought from the beginning.
> >>>
> >>> Regards,
> >>>   - Graeme -
> >>>
> >>> -- 
> >>> fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
> >>> http://fpgui.sourceforge.net/
> >>>
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> 
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