Solved

Writing a DLL

Posted on 2002-04-10
6
402 Views
Last Modified: 2010-04-04
Hi there, all i want to do is call a DLL however all i have is VB source, if anyone understands VB which i don't could you please help?

the dll and source code is here http://geocities.com/tcjdelphi/messenger.zip but i think the part i want is here...

Private Type YMSG5_LOGIN
    ymsg5_id As String * 34

    ymsg5_pwd As String * 34
    encryption_string As String * 26
    encrypted_string1 As String * 26
    encrypted_string2 As String * 26

End Type

Private Declare Function YMSG5_GetLoginStrings Lib "YMSG5LOG.DLL" (LPYMSG5LOGIN As YMSG5_LOGIN) As Long

Private Step As Integer
Private Connected As Boolean
Private ymsg5_log As YMSG5_LOGIN

So far i have in Delphi this...


Type TYmsg = Record
  ymsg5_id: String[34];
  ymsg5_pwd: String[34];
  encryption_string: String[26];
  encrypted_string1: String[26];
  encrypted_string2: String[26];
 End;

Var
  Ymsg: ^TYmsg;

Tdump//
Section:             Exports
  Flags:             00000000
  Time Stamp:        3C915F88 : Fri Mar 15 12:12:16 2002
  Major Version:     0000
  Minor Version:     0000

Exports from YMSG5LOG.dll
  2 exported name(s), 2 export addresse(s).  Ordinal base is 1.
  Sorted by Name:
    RVA      Ord. Hint Name
    -------- ---- ---- ----
    000011EA    1 0000 YMSG5_CryptString
    00001014    2 0001 YMSG5_GetLoginStrings
//

I am not even sure if CryptString does anything...

Am i on the right track?

Thanks to anyone who can help me :)
0
Comment
Question by:craig_capel
  • 2
  • 2
  • 2
6 Comments
 
LVL 12

Accepted Solution

by:
Lee_Nover earned 150 total points
ID: 6933248
Function YMSG5_GetLoginStrings(var LPYMSG5LOGIN: TYmsg): Integer; stdcall; external 'YMSG5LOG.DLL' name 'YMSG5_GetLoginStrings'

I guess you fill the structure with ID, Password then call the function and get a return value
the result values must be explained in the docs
0
 
LVL 2

Author Comment

by:craig_capel
ID: 6933350
yeah but is the pointer correct thing to do? since strings are Pchar?
0
 
LVL 2

Author Comment

by:craig_capel
ID: 6933470
yeah but is the pointer correct thing to do? since strings are Pchar?
0
Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

 
LVL 12

Expert Comment

by:Lee_Nover
ID: 6934474
it's ok because string[26] is an array of char and treated a bit differently than normal string
you can change that string[26] to "array[0..25] of char"
0
 
LVL 1

Expert Comment

by:pnh73
ID: 9003090
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

Accept Answer from Lee_Nover

Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Paul (pnh73)
EE Cleanup Volunteer
0
 
LVL 1

Expert Comment

by:pnh73
ID: 9010314
Thankyou for your response.

Paul (pnh73)
EE Cleanup Volunteer
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

789 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question