tradiate <[EMAIL PROTECTED]> wrote:
> I have a C++ XPCOM object that I have exposed to JavaScript. Calls
> from the JS environment to methods on my C++ object are working fine.
> I'm now introducing a new method to my C++ object that needs to return
> a JS Array back to the JavaScript caller. Is there an example in the
> mozilla tree that demonstrates how to do this sort of thing? If not,
> does anyone care to share snippet(s), or point me to a site, that
> illustrates the technique?
// XPIDL
void getArray(out unsigned long count, [array, size_is(count), retval]
out long retv);
// C++
NS_IMETHODIMP MyComponent::GetArray(PRUint32* count, PRInt32** retv) {
*count = 10;
*retv = (PRInt32*)nsMemory::Alloc(*count * sizeof(PRInt32));
for (int i = 0; i < 10; ++i) (*retv)[i] = i;
return NS_OK;
}
// JavaScript
var arr = myComponent.getArray({});
Igor Tandetnik
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