Subj : Re: unsigned long
To   : Thibaut <i_doz_not@hotmail.com>
From : Brendan Eich <brendan@meer.net>
Date : Thu Apr 15 2004 10:42 am

Thibaut wrote:
> I don't know how to resolve this error, if someone can help ... lengthp is a
> jsint like it's said in the api... ?!


Read jsapi.h:

[~/src/phoenix/mozilla/js/src]$ grep JS_GetArrayLength jsapi.h
JS_GetArrayLength(JSContext *cx, JSObject *obj, jsuint *lengthp);

The API docs may lie.  Someone please fix 'em, I'm weary of it.


> how can i convert a jsint (long) to unsigned long ?
> 
> 
> ///////////  my code ///////////////////
> jsint lengthp;
>    if (!JS_GetArrayLength(cx, array_children,&lengthp))
>     return JS_FALSE;
> /////////////////////////////////////////////
> error C2664: 'JS_GetArrayLength' : cannot convert parameter 3 from 'long *'
> to 'unsigned long *'


You are using C++, apparently.  It treats types as equivalent only if 
their names are equivalent.

You need to pass the address of a jsuint length.  Don't use jsint.

/be

.