v8::Object to void *

[Ubuntu Explorer]

I am using v8 in a custom C++ application with callbacks.
I need to pass a v8::Object as a (void *) to the callback and retrive
it back as a v8:Object in the callback.
How can I do this?

I can get the pointer, but how do I cast it back?

Regards,
UE

[Stephan Beal]

On Thu, Jul 21, 2011 at 9:55 AM, Ubuntu Explorer <ubuntue...@gmail.com> wrote:

I can get the pointer, but how do I cast it back?

Which pointer do you have? Object's API doesn't publish any members which give you access to the Object's underlying native void *. Objects themselves are _never_ passed around by pointer - only via Handle<Object> and friends.

--
----- stephan beal
http://wanderinghorse.net/home/stephan/

[Matthias Ernst]

On Thu, Jul 21, 2011 at 9:55 AM, Ubuntu Explorer
<ubuntue...@gmail.com> wrote:

> I am using v8 in a custom C++ application with callbacks.
> I need to pass a v8::Object as a (void *) to the callback and retrive
> it back as a v8:Object in the callback.
> How can I do this?

The right way to do this IMHO would be to
a) pass around a "new
Persistent<Object>(Persistent<Object>::New(theLocalObjectHandle))"
b) (*static_cast<Persistent<Object>*>(data))->Get...
c) when done, "handlep->Dispose()" and "delete handlep" .

>
> I can get the pointer, but how do I cast it back?
>
> Regards,
> UE
>

> --
> v8-users mailing list
> v8-u...@googlegroups.com
> http://groups.google.com/group/v8-users

[Ubuntu Explorer]

Segfaults in step (b).

Could you tell me which Get() function I need to use?

On Jul 23, 1:10 am, Matthias Ernst <matth...@mernst.org> wrote:
> On Thu, Jul 21, 2011 at 9:55 AM, Ubuntu Explorer
>