In your C++ code, args.This() points to 'myextension' and not 'a',
which is why it is unable to access the property.
You will have to pass a reference to 'a' and not a reference to
'callback' in order to get the right context.
Your C++ code should look something like this --
Handle<Value> MyExtension::Add(const Arguments& args)
{
HandleScope scope;
Handle<Object> object = args[0].As<Object>();
Handle<Function> func = object-
>Get(String::New("callback")).As<Function>();
func->Call(object, 0, NULL);
return scope.Close(Undefined());
}
And in Javascript --
myextension.add(a);
Hope that helps!
- Omkar
On Jan 3, 10:37 am, Sebastian <[email protected]> wrote:
> Hello together,
>
> I want to call a function which is a member of a class instance.
>
> Consider the following Javascript code.
> function MyClass(name)
> {
> this.name = name;
> this.callback = function () { console.log("My name is " +
> this.name"); }
>
> }
>
> var a = new MyClass("MyCallbackClass");
>
> myextension.add(a.callback);
>
> In my C++ part:
> Handle<Value> MyExtension::Add(const Arguments& args)
> {
> HandleScope scope;
> Local<Function> func =
> Local<Function>::New(args[0].As<Function>());
> func->Call(args.This(), 0, NULL);
> return scope.Close(Undefined());
>
> }
>
> When executing the code, the output is: "My name is Undefined" instead
> of "My name is MyCallbackClass. I guess this happens because I'm
> passing the wrong first argument (recv) to func->Call(), but how do I
> get the correct "this" to pass it to function call?
>
> Thanks in advance.
>
> Cheers,
> Sebastian
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