Solved

Class in Dll

Posted on 1997-05-23
2
968 Views
Last Modified: 2008-03-06
I have a C++ class in a dll and i want to use it in Delphi.
I asked help before about this subject and someone told me that i need a function in the dll to get a pointer to the class. I've tryed many things and my Delphi application still crushing. Can anyone tell me how is this function.
Thanks.
0
Comment
Question by:Nuno Alves
2 Comments
 

Accepted Solution

by:
Charlie V earned 20 total points
ID: 1336561
you have to declare the function in the INTERFACE part of the Unit
and before in de IMPLEMENTATION part of the unit
write with the parameter of EXTERNAL and the name of  the DLL
for example I use this in my proyect in Delphi

unit TheUnitMain;

INTERFACE
uses  ....

// this is the procedure to import from DLL
procedure LoadAboutbox(Handle: THandle; AppName: ShortString);

type ...

IMPLEMENTATION

procedure LoadAboutbox; external 'AboutDLL' ;

try this and I hope works with your proyect.
0
 
LVL 1

Author Comment

by:Nuno Alves
ID: 1336562
What I need is the function in C to put in the Dll to get a
pointer to the class, not the code in Delphi.
Thanks.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
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…

749 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