Subj : Re: C embedding question: failure in JS_DefineFunction
To   : netscape.public.mozilla.jseng
From : "Pavel Podgoretsky" <ppodgoretsky (@) naturalmessaging (.) com>
Date : Tue Mar 18 2003 12:42 pm

Hi Brendan,

Sorry I wasn't specific enough.  FindConstructor returns null, which is
propagated up the stack and eventually JS_DefineFunction returns null.
There are no other errors.

BUT while I was writing up a few more details for you, I found the problem!
Thank you! :)

The JSClass structure that I use needs a getObjectOps member (countrary to
what the api docs say!), and that member has to return a non-null
JSObjectOps.  [There is an access violation otherwise.]  Since I didn't know
what some of those should do, I just had them return JS_FALSE.  At some
point, lookupProperty was called [looking for 'Function', for some strange
to me reason] and returned JS_FALSE instead of setting its outparams to null
and returning JS_TRUE.  (If I recall correctly, the very helpful comments in
jspubtd.h were not as helpful when I wrote that code originally...)

Thank you for your extremely prompt response.

-Pavel

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