[S] dll.load problem solved

[Michael Wolf <mwolf@est-econ.uc3m.es>]

Dear all,

Thank you very much for responding so quickly to my dll.load problem
from yesterday. It turned out that the main problem was that Borland C++
run-time library is being called and hence the run time code needs to be
statically linked into the DLL. Using the Borland C++ builder, this is
done by turning off the linker option "Use dynamic RTL".

For those out there who might want to use the Borland C++ Builder with
Splus in the near future, I am including my two source files to build
the DLL SProject.dll. They are called SProject.cpp and SProject.h. The
DLL exports a single function "arsim1". It is loaded into Splus then
with the command dll.load("SProject.dll", "arsim1").

I hope this advice will save at least one soul all the trouble that I
had....

Michael



File SProject.cpp:

//---------------------------------------------------------------------------

#include <windows.h>
#include <condefs.h>

#pragma hdrstop

#include "SProject.h"


int WINAPI DllEntryPoint(HINSTANCE hinst, unsigned long reason, void*)
{
  return 1;
}
//---------------------------------------------------------------------------

void DLL_EXP __stdcall arsim1(double *x, long *n, double *phi) {
    int i;
    for (i = 1; i < *n; i++)
        x[i] += *phi * x[i-1];
}


File SProject.h:

#ifndef _SPROJECT_H
#define _SPROJECT_H

#ifdef __DLL__
#  define DLL_EXP __declspec(dllexport)
#else
#  define DLL_EXP __declspec(dllimport)
#endif

extern "C" void DLL_EXP __stdcall arsim1(double *x, long *n, double
*phi);

#endif

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