Load Dll dynamisk, og bruge den funktioner.

Måske giver jeg for let op, men jeg er ved at blive tosset over hvordan jeg skal bruge DLL'er effektivt...

Min kode til DLL'en er sådan her:

#include <windows.h>

HHOOK g_hMouseHook = NULL;
HWND hWndApp      = NULL;
HINSTANCE hInstDLL = NULL;

bool WINAPI DllMain(HINSTANCE hInstance, DWORD fdwReason, LPVOID lpvReserved)
{
    UNREFERENCED_PARAMETER(lpvReserved);
    switch(fdwReason)
    {
        case DLL_PROCESS_ATTACH:
            MessageBox(NULL,"PAttach","SET",MB_OK);
            hInstDLL = hInstance;
            break; 

        case DLL_THREAD_ATTACH:
            MessageBox(NULL,"TAttach","SET",MB_OK);
            break;

        case DLL_THREAD_DETACH:
            MessageBox(NULL,"TDetach","SET",MB_OK);
            break;

        case DLL_PROCESS_DETACH:
            MessageBox(NULL,"PDetach","SET",MB_OK);
            break;
    }
    return true;
}

bool __declspec(dllexport)printfDll(LPTSTR lpTxt)
{
    MessageBox(NULL,lpTxt,"INFO",MB_OK);
    return true;
}

Og til selve programmet:

#include <stdio.h>
#include <windows.h>

typedef VOID (*MYPROC)(LPTSTR);

void error(LPSTR);

VOID main(VOID)
{
    MYPROC ProcAdd;
    HINSTANCE hinstLib;
    bool fRunTimeLinkSuccess = FALSE;

    // Get a handle to the DLL module.
    hinstLib = LoadLibrary("mydll.dll");

    // If the handle is valid, try to get the function address.
    if (hinstLib != NULL)
    {
        printf("+ LoadLibrary Done\n");
        ProcAdd = (MYPROC) GetProcAddress(hinstLib, "printDll");

        // If the function address is valid, call the function.
        if (NULL != ProcAdd)
        {
            printf("+ GetProcAddress Done\n");
            fRunTimeLinkSuccess = TRUE;
            (ProcAdd) ("message via DLL function\n");
        }
        else
        {
            printf("- GetProcAddress Failed\n");
            error("GetProcAddress");
        }

    // Free the DLL module.
    FreeLibrary(hinstLib);
    }
    else
    {
        printf("- LoadLibrary Failed\n");
        error("LoadLibrary");
    }

    // If unable to call the DLL function, use an alternative.
    if (! fRunTimeLinkSuccess)
        printf("message via alternative method\n");
}

void error(LPSTR lpszFunction)
{
    CHAR szBuf[80];
    DWORD dw = GetLastError();

    sprintf(szBuf, "%s failed: GetLastError returned %u\n", lpszFunction, dw);

    MessageBox(NULL, szBuf, "Error", MB_OK);
    ExitProcess(dw);
}

Jeg får fejlen: Hvor den skal GetProcAddress, og windows error code: 127 The specified procedure could not be found.

Men den skulle da gerne være der, eller tager jeg fejl?

Noge som kan hjælpe?