Re: How to get the handle to a QTVideoTrack?

[Arnaud Nicolet <anic297@mac.com>]

Le 30 juin 09 à 20:15, Christian Schmitz a écrit:

> Am 30.06.2009 um 19:04 schrieb Arnaud Nicolet:
>
> > Le 30 juin 09 à 18:54, Charles Yeomans a écrit:
> >
> > Someone told me "It's the address of an object". Is that wrong?
> Not always.
>
> A handle is a number, a ticket. Something to identify something  
> later in your application. Your application doesn't know normally  
> what it is.
> * On Mac OS X a handle can be often a pointer to a pointer to data.  
> This way old Mac OS versions had a way to move data in memory as  
> only the second pointer changes.
> * On Windows it is often an index in a table with objects.
> * Sometimes a handle is an object reference.
>
> The good thing is: Your app does not care. So if from one OS  
> Version to the next the handle is no longer an object, but in index  
> in a table, your app won't notice and still work.
Ah yes, I see. Thank you.
Greetings
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