I have this DLL code, but I cannot access function.
Where am I wrong?
main.h
#ifndef __MAIN_H__
#define __MAIN_H__
#include <windows.h>
/* To use this exported function of dll, include this header
* in your project.
*/
#ifdef BUILD_DLL
#define DLL_EXPORT __declspec(dllexport)
#else
#define DLL_EXPORT __declspec(dllimport)
#endif
#ifdef __cplusplus
extern "C"
{
#endif
//simple functions are being exported
EXPORT_DLL double Addition(double a, double b);
EXPORT_DLL double Multiplication(double a, double b);
#ifdef __cplusplus
}
#endif
#endif // __MAIN_H__main.cpp
#include "main.h"
//add them and return the answer
double DLL_EXPORT Addition(double a, double b)
{
double c = a+b;
return c;
}
//multiply them and return the answer
double DLL_EXPORT Multiplication(double a, double b)
{
double c = a*b;
return c;
}And here is the console App that calls the DLL
#include <iostream>
#include <windows.h>
typedef double(*FuncPtr)(double a, double b);
//declare DLL handle
HINSTANCE hDLL;
//declare pointers to the functions
FuncPtr AddFunc, MultiFunc;
using namespace std;
int main()
{
//create handle to our DLL
hDLL = LoadLibrary("mathdll");
//Get proc address if handle is valid
if (hDLL!=NULL)
{
cout<<"Loaded DLL! \n"<<"Getting Proc Address"<<endl;
AddFunc = (FuncPtr)GetProcAddress(hDLL, "Addition");
if(AddFunc)
{
cout<<"Sum of 8 and 2 is: "<<AddFunc(8.0, 2.0);
FreeLibrary(hDLL);
}
else
{
cout<<"Failed to get a function! Unloading the DLL"<<endl;
FreeLibrary(hDLL);
}
}
return 0;
}