how can we dereference pointer in javascript

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C

Javascript

Win32

hi my problem is about dereferencing the void* to string so i can display value

so far i have created a dll which exports somefun()



MY.dll in C std calling

void* somefun()
{
  return &eax;
}

this function is then loaded in Javascript via jcstypes for XUL


MYJS.js

function rmorework() {

Components.utils.import("resource://gre/modules/ctypes.jsm");

var lib = ctypes.open("C:\\myapp\\dl1.dll");
var ans= lib.declare("somefun" , ctypes.stdcall_abi , ctypes.int8_t );
alert("generating result.... ");
var ptrs = ans();
alert("MessageBox result : "+ptrs); ////(which is void*)


lib.close();
}

how can i get correct value when dereferencing var ptrs

alert("MessageBox result : "+ptrs);

currently i am getting undefined value for void*
if i change somefun to char in place of void* it works