text: /*****************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   *  Copyright (c) 2000 David Odin (aka DindinX) for MandrakeSoft
   */
  /* <DESC>
   * use the libcurl in a gtk-threaded application
   * </DESC>
   */
  
  #include <stdio.h>
  #include <gtk/gtk.h>
  
  #include <curl/curl.h>
  
  GtkWidget *Bar;
  
  size_t my_write_func(void *ptr, size_t size, size_t nmemb, FILE *stream)
  {
    return fwrite(ptr, size, nmemb, stream);
  }
  
  size_t my_read_func(void *ptr, size_t size, size_t nmemb, FILE *stream)
  {
    return fread(ptr, size, nmemb, stream);
  }
  
  int my_progress_func(GtkWidget *bar,
                       double t, /* dltotal */
                       double d, /* dlnow */
                       double ultotal,
                       double ulnow)
  {
  /*  printf("%d / %d (%g %%)\n", d, t, d*100.0/t);*/
    gdk_threads_enter();
    gtk_progress_set_value(GTK_PROGRESS(bar), d*100.0/t);
    gdk_threads_leave();
    return 0;
  }
  
  void *my_thread(void *ptr)
  {
    CURL *curl;
    FILE *outfile;
    gchar *url = ptr;
  
    curl = curl_easy_init();
    if(curl) {
      const char *filename = "test.curl";
      outfile = fopen(filename, "wb");
  
      curl_easy_setopt(curl, CURLOPT_URL, url);
      curl_easy_setopt(curl, CURLOPT_WRITEDATA, outfile);
      curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_write_func);
      curl_easy_setopt(curl, CURLOPT_READFUNCTION, my_read_func);
      curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
      curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, my_progress_func);
      curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, Bar);
  
      curl_easy_perform(curl);
  
      fclose(outfile);
      /* always cleanup */
      curl_easy_cleanup(curl);
    }
  
    return NULL;
  }
  
  int main(int argc, char **argv)
  {
    GtkWidget *Window, *Frame, *Frame2;
    GtkAdjustment *adj;
  
    /* Must initialize libcurl before any threads are started */
    curl_global_init(CURL_GLOBAL_ALL);
  
    /* Init thread */
    g_thread_init(NULL);
  
    gtk_init(&argc, &argv);
    Window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    Frame = gtk_frame_new(NULL);
    gtk_frame_set_shadow_type(GTK_FRAME(Frame), GTK_SHADOW_OUT);
    gtk_container_add(GTK_CONTAINER(Window), Frame);
    Frame2 = gtk_frame_new(NULL);
    gtk_frame_set_shadow_type(GTK_FRAME(Frame2), GTK_SHADOW_IN);
    gtk_container_add(GTK_CONTAINER(Frame), Frame2);
    gtk_container_set_border_width(GTK_CONTAINER(Frame2), 5);
    adj = (GtkAdjustment*)gtk_adjustment_new(0, 0, 100, 0, 0, 0);
    Bar = gtk_progress_bar_new_with_adjustment(adj);
    gtk_container_add(GTK_CONTAINER(Frame2), Bar);
    gtk_widget_show_all(Window);
  
    if(!g_thread_create(&my_thread, argv[1], FALSE, NULL) != 0)
      g_warning("can't create the thread");
  
  
    gdk_threads_enter();
    gtk_main();
    gdk_threads_leave();
    return 0;
  }
  