Solved

Can't find DLL entry point / VB6

Posted on 2006-07-10
4
1,825 Views
Last Modified: 2012-06-22
Hi,

I'm calling a function from a dll written in C++ Borland 5.02 as follows:
declaration:
   Declare Function UpgradeTables Lib "emUpgradeDB.dll" (ByVal Region_English As Integer) As Long

call:
  dim Result as long
  Result = UpgradeTables(92)

In C++ the function is declared as follows:

   extern "C" int FAR _export UpgradeTables (int languageID)

The result is 'Run-Time error '453': Can't find DLL entry point UpgradeTables in emUpgradeDB.dll

Can anybody tell me what the problem could be?

Thanks!
0
Comment
Question by:ecomaster
4 Comments
 
LVL 29

Expert Comment

by:nffvrxqgrcfqvvc
ID: 17074969
Make sure the dll is in the system32 directory. The way your declaring the DLL if your debuging in the IDE its going to look for the DLL in the system32 directory.

However when you disturbute your application your exe will first look in the application path and then the system32 directory for your DLL as you have it declared above.

Also make sure the exported function is spelled correctly, because its case sensitive.
0
 
LVL 9

Expert Comment

by:justchat_1
ID: 17075934
Make sure the dll has a correct DEF file in... Also, if its a syntax error maybe the C++ TA could help you out...
0
 
LVL 8

Accepted Solution

by:
kaliyugkaarjun earned 500 total points
ID: 17079297
0
 

Author Comment

by:ecomaster
ID: 17079483
Hi,

thanks, kaliyugkaarjun. On the site you mentioned I found the solution. I declared according to:

     Declare Function UpgradeTables Lib "emUpgradeDB.dll" Alias "_UpgradeTables" (ByVal Region_English As Integer) As Long

and it works.

Many thanks !!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Introduction I needed to skip over some file processing within a For...Next loop in some old production code and wished that VB (classic) had a statement that would drop down to the end of the current iteration, bypassing the statements that were c…
I was working on a PowerPoint add-in the other day and a client asked me "can you implement a feature which processes a chart when it's pasted into a slide from another deck?". It got me wondering how to hook into built-in ribbon events in Office.
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…

895 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

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now