How to realize ## without #define (maybe with inline)?

[Hua.watson]

#define ABC_DLL_F_GET(hDll, func_name) \
{ \
(fproc_t &)lpfn##func_name = abc_GetProcAddress(hDll, #func_name); \
}

If I want to modity this #define macro to something in good C++ style
like a inline func, how should I do$B!)(B

Thanks

[Hua.watson]

by the way, this macro is used in an .cpp to provide explicit linking
of DLL. It provides accessing to exported functions of DLL just like a
normal function, as well as use the same header file provided by the
DLL

Is there any good library provides this functionality ? Then I need
not write it myself

[Ian Collins]

Hu********@gmail.com wrote:

by the way, this macro is used in an .cpp to provide explicit linking
of DLL. It provides accessing to exported functions of DLL just like a
normal function, as well as use the same header file provided by the
DLL

Is there any good library provides this functionality ? Then I need
not write it myself

Maybe you should ask on a windows programming group where dlls are topical.

--
Ian Collins.

[red floyd]

On Sep 14, 10:45*pm, Ian Collins <[e-mail]:

[e-mail] wrote:

by the way, this macro is used in an .cpp to provide explicit linking
of DLL. It provides accessing to exported functions of DLL just like a
normal function, as well as use the same header file provided by the
DLL

Is there any good library provides this functionality ? Then I need
not write it myself

Maybe you should ask on a windows programming group where dlls are topical.

I'm not so sure. I'm as much of an off-topic cop as the next guy, and
it seems that what he's really looking for is how to replace the
(ugly) macro with an inline function, which *is* on topic.

[Paavo Helde]

Hu********@gmail.com kirjutas:

#define ABC_DLL_F_GET(hDll, func_name)
\ {
\
(fproc_t &)lpfn##func_name = abc_GetProcAddress(hDll,
#func_name); \
}

If I want to modity this #define macro to something in good C++ style
like a inline func, how should I do

If your goal is not to repeat the function name, then the best I can
imagine is something like (warning - untested code!):

std::map<std::string, fproc_tfunc;

void ImportAbcFunc(HDllType hDll, const char* func_name) {
func[func_name] = abc_GetProcAddress(hDll, func_name);
}
ImportAbcFunc(hDll, "foo");
ImportAbcFunc(hDll, "bar");

int result = (*func["foo"])(arg1, arg2);

This works better if all functions have the same signature.

Anyway, I see nothing awfully wrong with the macro as well here.
Preprocessor is part of C++ after all.

hth
Paavo