HttpSendRequest

int doHttpPost(char *szDomain, char *szPage, char *szPost)
{
    int iReturn = 1;
    HINTERNET hSession = NULL;
    HINTERNET hConnect = NULL;
    HINTERNET hRequest = NULL;

    static TCHAR hdrs[] = "Content-Type: application/x-www-form-urlencoded";
    const char *accept[2]={"*/*", NULL};
    TCHAR *frmdata = szPost;

    hSession = InternetOpen("AGENT", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
    if(hSession)
    {
        hConnect = InternetConnect(hSession, szDomain, INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1);
        if(hConnect)
        {
            hRequest = HttpOpenRequest(hConnect, "POST", szPage, NULL, NULL, accept, INTERNET_FLAG_NO_CACHE_WRITE | INTERNET_FLAG_NO_COOKIES | INTERNET_FLAG_NO_UI | INTERNET_FLAG_RELOAD, 0);
            if(hRequest)
            {
                if(HttpSendRequest(hRequest, hdrs, strlen(hdrs), frmdata, strlen(frmdata)))
                    iReturn = 0;
                else
                    iReturn = 5;
            }
            else    //HttpOpenRequest
                iReturn = 3;
        }
        else    //InternetConnect
            iReturn = 2;
    }
    else  //InternetOpen
        iReturn = 1;

    //Cleanup
    InternetCloseHandle(hSession);
    InternetCloseHandle(hConnect);
    InternetCloseHandle(hRequest);

    return iReturn;
}