Using DLLs after compiled...

I have created a DLL and I want to use it. What do I do to calla certain function in the .dll?

ok heres a quick program...


The DLL shoud look as follows:

dll.h

Code:

---


#ifndef _IMPORTING_MY_DLL_
#define FUNCTION __declspec(dllexport)
#else
#define FUNCTION __declspec(dllimport)

FUNCTION void myfunc(void);

---

dll.cpp

Code:

---


#include <stdio.h>
#include "dll.h"

void myfunc(void)
{
    printf("Using function inside a dll.");
}

---

ok now make sure to link to the lib that you created with the DLL, and to move the dll.h to a place the program can find it.

the program should do as follows

main.cpp

Code:

---


#define _IMPORTING_MY_DLL_
#include "dll.h"

/*edit*/

// Replace Mydire with the lib directory, and mylib with the lib name
#pragma comment(lib,"mydir\mylib.lib");

/*edit*/

int main(void)
{
    myfunc();
    return 0;
}

---

I want to get the function from the actual .dll file.

you mean call it or ?

Yes, I mean call the function. For example, the function make a message box.

well as long as you have __declspec(dllexport) before the function declaration in the dll, heres is all you have to do,

Link to the lib,
and redeclare the function with __declspec(dllimport) in the calling program before you use it and it should work perfectly,

like this

__declspec(dllimport) int myfunc(char* t,char* s);

int main(void)
{
myfunc("BOOYA!","Grandma!...BOOYA!!");
}

see the example i gave above if its not clear(its a fully functional program).

also use a define in the dll header to do the switching form import to export for ease of use..

::edit:: you can use comment(lib,"C:\libs\mylib.lib") to link to the library.

That worked!