SPO-5-WIN-LIB

// dilib.cpp: определяет экспортированные функции для приложения DLL.
//

#include "stdafx.h"
#include <stdio.h>
extern "C"
{
__declspec(dllexport) int ASyncRead(HANDLE hFile, char* FileContent, int size, DWORD offset)
{
    DWORD nBytesRead;
    OVERLAPPED fOverLapped;
    ZeroMemory(&fOverLapped, sizeof(OVERLAPPED));
    fOverLapped.hEvent = CreateEvent(NULL, false, false, NULL);
    fOverLapped.Offset = offset;

    ReadFile(hFile, FileContent, 1024, NULL, &fOverLapped);
    WaitForSingleObject(fOverLapped.hEvent, INFINITE);
    GetOverlappedResult(hFile, &fOverLapped, &nBytesRead, false);
    return nBytesRead;
}

__declspec(dllexport) void ASyncWrite(HANDLE hFile, char* FileContent, DWORD *offset)
{
        char buf[15];
        DWORD nBytesWritten;
        OVERLAPPED fOverLapped;
        ZeroMemory(&fOverLapped, sizeof(OVERLAPPED));
        fOverLapped.Offset = *offset;
        fOverLapped.hEvent = CreateEvent(NULL, false, false, NULL);

        WriteFile(hFile, FileContent, strlen(FileContent), NULL, &fOverLapped);
        WaitForSingleObject(fOverLapped.hEvent, INFINITE);
        *offset += strlen(FileContent);

        CloseHandle(fOverLapped.hEvent);
}
}