Shoutbox

Hi,

I have 2 questions (and it seems a bit stupid to me, to post 2 threads in less than 15 min. ).

1.

Is there a way to detect when a DLL function is called (so when I display a message box using "MessageBoxW" in "User32.dll")?

2.

In the following piece of code, I get some weird error (though my scirpt works perfectly):

code:

---

    var Contacts = Messenger.MyContacts;
    var e = new Enumerator(Contacts);
    var c = Contacts.Count;
    for(i = 0; i < c; i++) {
        e.moveNext();
        Contact = e.item();
        EmailArray[i] = Contact.Email; // This line keeps giving a "-2146823281"-error..
//        Debug.Trace(EmailArray[i]); Disabled.. Only gives the email addresses from the contactlist..
        WndEmail.Combo_AddItem("Email",Contact.Email);
    }

---

The error states that Contacts.Email is an empty object.
Part of the problem is my ability to understand the "for()" statement.. Which I don't really really don't understand..


2nd question solved

1. it's your script... shouldn't you be able to tell other parts of it when you call a DLL yourself?

2.

try this:

var Contacts = Messenger.MyContacts;
var e = new Enumerator(Contacts);
while (e.moveNext()) {
var contact = e.item();
EmailArray[i] = contact.Email;
WndEmail.Combo_AddItem("Email",contact.Email);
}

quote:

---

Originally posted by ShawnZ
1. it's your script... shouldn't you be able to tell other parts of it when you call a DLL yourself?

2.

try this:

var Contacts = Messenger.MyContacts;
var e = new Enumerator(Contacts);
while (e.moveNext()) {
var contact = e.item();
EmailArray[i] = contact.Email;
WndEmail.Combo_AddItem("Email",contact.Email);
}

---

1.

I actually mean, that as soon as Windows calls a function in a DLL, I'd like to know of its name and parameters.. I have DLLExp, which only reads the DLL's function names and some weird "address" thing..

2.

I'm sorry to say that your code doesn't work.. It gives me an empty combobox..

quote:

---

Originally posted by SmokingCookie
I actually mean, that as soon as Windows calls a function in a DLL, I'd like to know of its name and parameters.. I have DLLExp, which only reads the DLL's function names and some weird "address" thing..

---

you mean, when any program on the system calls a certain DLL? that's a lot harder to do...

Indeed.. That's why my last hope is this forum.. I am not too lazy to select the process/DLL myself, if only I could get the function names and parmeters..

And I think I'll have to live with the error

it's a bit late for a reply

quote:

---

Originally posted by SmokingCookie
I actually mean, that as soon as Windows calls a function in a DLL, I'd like to know of its name and parameters.. I have DLLExp, which only reads the DLL's function names and some weird "address" thing..

---

Have you tried with SpyStudio?
Take a look at the picture, I installed a hook (using SpyStudio) to detect when 'MessageBox' is called ;D


so, when you call 'MessageBox'  (in a script, for example) you will see the function's name and its parameters (useful when you want to learn about external application's behavior)

code:

---

Interop.Call('user32', 'MessageBoxW', 0, 'text', 'title', 64)

---

---

about the second question... try this:

code:

---

for(var e = new Enumerator(Messenger.MyContacts) ; !e.atEnd(); e.moveNext())
{
    Debug.Trace(e.item().Email);
// WndEmail.Combo_AddItem("Email", e.item().Email);   
}

---

code:

---

var EmailAddresses = new Array()
for (var e = new Enumerator(Messenger.MyContacts); !e.atEnd(); e.moveNext() ) {
    EmailAddresses.push(e.item().Email); // add the Contacts email address to the end of the array
    WndEmail.Combo_AddItem("Email", e.item().Email);
}

---

Or if you are as so inclined to create a loop to fill the Combo box...

code:

---

for (var i in EmailAddresses) {
    WndEmail.Combo_AddItem("Email", EmailAddresses[i]);
}

---

Well, thanks for the replies.. Going to make homework nouw

I'll test these codes and SpyStudio later this afternoon, or in the evening..

EDIT:: Error solved.. Thanks (again ) guys

The problem with your code is that you call "e.moveNext()" at the beginning of your loop. This means that it'll start off by index 1 in the Enumerator object and will go past the end. Thus, you're actually missing the first contact and then you go past the end of the enumeration, giving you that "empty object" error.

In fact, there's an even better way to do this. Instead of using your numeric "i" variable in your for-loop, you can do the checks with the Enumerator and let the "i" variable increase with it. You don't even need to put it at the end of the loop yourself, you can place in the incremental statement by separating it with a comma from the "e.moveNext()"! And you can also do the same to define both the "i" and "e" variables!

This can give you code as short as this:

code:

---

for(var e = new Enumerator(Messenger.MyContacts), i = 0; !e.atEnd(); e.moveNext(), i++) {
Contact = e.item();
EmailArray[i] = Contact.Email;
WndEmail.Combo_AddItem("Email",Contact.Email);
}

Red = initial statement
Green = conditional statement
Blue = incremental statement

---

Just to show you how much you can simplify a piece of JScript by pushing it to the limits...

Hey, I'm a serious n00b with the for() statement (it just doesn't make any sense to me )

Well, I think I have some things to experiment with for tonight