Re: Elementary question on preprocessors and xlw

From:

=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?= <Erik-wikstrom@telia.com>

Newsgroups:

comp.lang.c++

Date:

Thu, 04 Oct 2007 11:54:30 GMT

Message-ID:

<Wv4Ni.10392$ZA.6958@newsb.telia.net>

On 2007-10-04 13:23, pauldepstein@att.net wrote:

On Oct 4, 7:05 pm, "Chris ( Val )" <chris...@gmail.com> wrote:

On Oct 4, 7:45 pm, pauldepst...@att.net wrote:

I am using the xlw package as a c++ wrapper for excel functions. In
our c++ library, there is an excel function which our c++ developers
refer to as DevelopersFunction, and which the excel users refer to as
ExcelFunction. [Names of functions changed to preserve corporate
confidentiality]

There is some code containing the string "DevelopersFunction" which
results in the excel users seeing the text DevelopersFunction when
they use the insert_function command in excel.

But the excel users should see "ExcelFunction"

I would imagine that this can be done by a simple preprocessor #define
command.
I tried to rename the function to ExcelFunction in excel and then
#define DevelopersFunction ExcelFunction

But this doesn't appear to work.

Any suggestions.

To be honest, I can't follow your description of
the problem, and I don't know of any "packages"
(at least not in a the C++ context).

Maybe you can look at using a 'typedef'?

Please try to be a little more clear and someone
else might be able to help you.

--
Chris Val- Hide quoted text -

- Show quoted text -

Thanks.

I have found a way of clarifying the problem, now that I understand
the issue better myself

I have a constructor called MyConstructor which takes a const
std::string & parameter.

I want the preprocessor to translate MyConstructor("dog") into
MyConstructor("cat").

This seems like a #define problem rather than a typedef problem.

#include <iostream>
#include <string>

#ifdef NDEBUG
#define WORD "dog"
#else
#define WORD "cat"
#endif

struct Foo
{
  std::string str;
  Foo(const std::string& s) : str(s) { }
};

int main()
{
  Foo f(WORD);
  std::cout << f.str;
}

You just have do figure out something to test against instead of NDEBUG
and it should all work.

--
Erik Wikstr??m