Russian Qt Forum

class httpupload : public QObject
{
    Q_OBJECT
public:
    explicit httpupload(QObject *parent = 0);
    void uploadfile(QString filename);
    size_t curl_write(void *ptr, size_t size, size_t nmemb, void *userdata);
    CURL *curl;
    FILE* file;
signals:   
public slots:
};

size_t httpupload::curl_write(void *ptr, size_t size, size_t nmemb, void* userdata){
    size_t retcode = fread((char*)ptr, buffsize, 1, file);
    return retcode;
}

void httpupload::uploadfile(QString filename){
    curl = curl_easy_init();
....
     file = fopen(filename.toAscii().data(), "rb"); 
   if(curl) {
      curl_easy_setopt(curl, CURLOPT_URL, uploadurl.toAscii().data());
      curl_easy_setopt(curl, CURLOPT_POST, 1);
      curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE,outsegment);
      curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)outsegment);
      curl_easy_setopt(curl, CURLOPT_READDATA, file);
      curl_easy_setopt(curl, CURLOPT_READFUNCTION, &httpupload::curl_write);
      res = curl_easy_perform(curl);
      if(res != CURLE_OK) {
        fprintf(stderr, "curl_easy_perform() failed: %s\n",
                curl_easy_strerror(res));

      };
    curl_easy_cleanup(curl);
  };