Calling a dll from a Javascript

[Venkat]

Hi All,

I am not able to access a dll function from a remote script using
ActiveXobject when
an output parameter is used, but i could able to access the same when no
output parameter
is used.

While calling a DLL function from my javascript app i am passing 3
parameters
(2 input parameters and 1 output parameter).
The output parameter basically stores the return value which then will be
used
in my Javascript app.
Pl note that in my IDL file i changed the return type of output parameter to
[out, retval].

Here is my Javascript file.

fun1(id,passwor d)
{
var AutherizedUser;
var ValidateObject = new ActiveXobject(" InstallDLL.Inst all");
ValidateObject. ValidateUser(id ,password,Authe rizedUser);
return AutherizedUser;
}

DLL

STDMETHODIMP CInstall::Valid ateUser(BSTR userId, BSTR pwd, BOOL* pVal)
{
// TODO: Add your implementation code here
LDAP *ldap;

ldap = ldap_open("ldap .xyz.com", LDAP_PORT);

if(ldap == NULL)
{
*pVal = FALSE;
return S_FALSE;
}

ULONG val = ldap_simple_bin d_s(ldap, dn, BSTRToChar(pwd) );
//pl note that these functions are working properly and no problem with
them.
if (val == LDAP_SUCCESS)
{
*pVal = TRUE;
}
else
{
*pVal = FALSE;
return S_FALSE;
}
return S_OK;
}

I appreciate your help.


Regards
Venkat

[Venkat]

Re: Calling a dll from a Javascript

"Steve van Dongen" <stevevd@hotmai l.com> wrote in message
news:1uktkvo871 t8fc1ebok5b5snv d39s7rfnb@4ax.c om...[color=blue]
> On Thu, 28 Aug 2003 17:05:06 -0500, "Venkat" <venkat_kp@yaho o.com>
> wrote:
>[color=green]
> >Hi All,
> >
> >I am not able to access a dll function from a remote script using
> >ActiveXobjec t when
> >an output parameter is used, but i could able to access the same when no
> >output parameter
> >is used.[/color]
> <snip />
>
> Unfortunately, JScript doesn't support out parameters. If you're
> working in an environment where its possible to use VBScript, you
> could write a wrapper function in VBScript that you could call from
> JScript.
>
> Regards,
> Steve[/color]

I found the problem and i don't avoid anyone any point.
The calling of DLL function is different when output parameters are used.

If id,password and AutherizedUser are Input parameters then Javascript
calling is

var AutherizedUser;
var ValidateObject = new ActiveXobject(" InstallDLL.Inst all");
ValidateObject. ValidateUser(id ,password,Authe rizedUser);
return AutherizedUser;

If id and password are input parameters and AuthorizedUser is output
parameter then the calling is
var AutherizedUser;
var ValidateObject = new ActiveXobject(" InstallDLL.Inst all");
AutherizedUser = ValidateObject. ValidateUser(id ,password);
return AutherizedUser;


Thought it will be helpful to others.

Regards
Venkat