[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

DLL in C++ classes

Posted on 1997-03-01
2
Medium Priority
?
241 Views
Last Modified: 2010-04-10
How to declare member function in def file of class ?

Declaretion as dll_name.class_name.function_name doesn't
correct.
0
Comment
Question by:a121496
2 Comments
 
LVL 3

Expert Comment

by:os012897
ID: 1162125
Can you be a bit more specific on what compiler you are using??

Regards,

         os

0
 

Accepted Solution

by:
pangofil earned 150 total points
ID: 1162126
It depends on the compiler You are using :
each one has his own naming convention.

But You can declare whole class as __export
and leave DEF file default.

#ifdef __DLL__
#define MYCLASSDEC __export
#else
#define MYCLASSDEC __import
#endif

class MYCALSSDEC MyClass
 {
   .....

 } ;

After linking DLL, make LIB file for it ( by IMPLIB utility ) and link LIB file to EXE You are callin DLL from.

It works for BC++ & VC++

Another way to do it :

Make outclass function, what calls class memeber function :

extern "C"
{
 int FAR PASCAL __export MyCallFunc ( ... )
  {
    return my_class.MemeberFunc ( ... ) ;
  }
}

MyCallFunc can be defined as EXPORT in DEF file.

Hope, it helps.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

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

Written by John Humphreys C++ Threading and the POSIX Library This article will cover the basic information that you need to know in order to make use of the POSIX threading library available for C and C++ on UNIX and most Linux systems.   [s…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.
Suggested Courses

591 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