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DLL in C++ classes

Posted on 1997-03-01
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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.
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Question by:a121496
2 Comments
 
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Expert Comment

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

Regards,

         os

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Accepted Solution

by:
pangofil earned 50 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.
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