C++ function overloading in harbour wrapper function not working

[Reinaldo Crespo]

Hello Harbour!

I'm trying to write some c wrappers for harbour VM and attempting to use function overloading.    

In C++, you can achieve function overloading by declaring multiple functions with the same name but different parameter lists. 

However, when compiling my .prg that includes c code inside #pragma BEGINDUMP, Harbour reports declaration syntax error when I try to implement function overloading.   Here is some sample code:

HB_BOOL OCRWait(long JobNo, TOCRJOBINFO2 JobInfo2);
BH_BOOL OCRWait(long JobNo, TOCRJOBINFO_EG JobInfoEg);

On these two lines  the compiler errors:

Type mismatch in redeclaration of OCRWait

Earlier declaration of 'OCRWait'

Also, why can't I just declare these c functions as "bool" if I'm only calling them from inside other c++ code and not directly from Harbour code?

Can someone here help?

Thank you.

[Bacco]

Why don't you simply create a separated C++ file for your wrapper and

compile together instead of BEGINDUMP?

You can't use name mangling this way in C.

As it's not a bug in Harbour itself, I believe this should be posted on users group, not the development one:

https://groups.google.com/g/harbour-users

Regards,

Bacco

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[Reinaldo Crespo]

Ok, Bacco.  I will do so.

TY.

[Francesco Perillo]

You are using c++ syntax where the language used is c...

C doesn't support function overloading.

So.... 

You may try to put these functions in a external .cpp file that hbmk2, recognizing the .cpp, will compile as c++.

[Reinaldo Crespo]

Francesco,  that's an answer that makes sense and helps me understand what's happening.   One always wishes for that type of answers when posting on forums.

Thank you,