// aaaaaaaaaa.cpp : Defines the entry point for the console application.

//

#include "stdafx.h"

#include <windows.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <commdlg.h>

#define READ_TIMEOUT 500

#include <windef.h>

　

　

int _tmain(int argc, _TCHAR* argv[])

{

TCHAR* currentuser = L"COM8";

LPCWSTR *lstr = (LPCWSTR *)(&currentuser);

HANDLE hComm;

 

DWORD dwRead;

OVERLAPPED osReader = {0};

 

DWORD dwRes;

hComm = CreateFile(*lstr,GENERIC_READ | GENERIC_WRITE, 0, 0,

OPEN_EXISTING,FILE_FLAG_OVERLAPPED,0);

if (hComm == INVALID_HANDLE_VALUE) printf("*Error opening port\n");

else printf("*Port opened succesfully\n");

osReader.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);

if (osReader.hEvent == NULL) printf("*Error creating overlapped event; abort\n");

BYTE inByte = 1;

for(int i=0; i<100; i++) {

if(!ReadFile(hComm, &inByte, 1, &dwRead, &osReader))

dwRes = WaitForSingleObject(osReader.hEvent, READ_TIMEOUT);

printf("%02x\n", inByte);

}

CloseHandle(osReader.hEvent);

//wait for user

int a;

scanf("%d", &a);

return 0;

}