#include <gtk/gtk.h>

int main (int argc,
          char *argv[])
{
  GtkWidget *window, *swin, *viewport, *table1, *table2, *vbox;
  GtkAdjustment *horizontal, *vertical;
  GtkWidget *buttons1[10][10], *buttons2[10][10];
  unsigned int i, j;
  
  gtk_init (&argc, &argv);
  
  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title (GTK_WINDOW (window), "Scrolled Windows & Viewports");
  gtk_container_set_border_width (GTK_CONTAINER (window), 10);
  gtk_widget_set_size_request (window, 500, 400);
  
  g_signal_connect (G_OBJECT (window), "destroy",
                    G_CALLBACK (gtk_main_quit), NULL);
  
  table1 = gtk_table_new (10, 10, TRUE);
  table2 = gtk_table_new (10, 10, TRUE);
  gtk_table_set_row_spacings (GTK_TABLE (table1), 5);
  gtk_table_set_row_spacings (GTK_TABLE (table2), 5);
  gtk_table_set_col_spacings (GTK_TABLE (table1), 5);
  gtk_table_set_col_spacings (GTK_TABLE (table2), 5);

  /* Pack each table with 100 buttons. */
  for (i = 0; i < 10; i++)
  {
    for (j = 0; j < 10; j++)
    {
      buttons1[i][j] = gtk_button_new_from_stock (GTK_STOCK_CLOSE);
      buttons2[i][j] = gtk_button_new_from_stock (GTK_STOCK_CLOSE);
      gtk_button_set_relief (GTK_BUTTON (buttons1[i][j]), GTK_RELIEF_NONE);
      gtk_button_set_relief (GTK_BUTTON (buttons2[i][j]), GTK_RELIEF_NONE);
      
      gtk_table_attach_defaults (GTK_TABLE (table1), buttons1[i][j], 
                                 i, i + 1, j, j + 1);
      gtk_table_attach_defaults (GTK_TABLE (table2), buttons2[i][j], 
                                 i, i + 1, j, j + 1);
    }
  }
  
  /* Create a scrolled window and a viewport, each with one table. Use the
   * adjustments in the scrolled window to synchronize both containers. */
  swin = gtk_scrolled_window_new (NULL, NULL);
  horizontal = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (swin));
  vertical = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (swin));
  viewport = gtk_viewport_new (horizontal, vertical);
  
  gtk_container_set_border_width (GTK_CONTAINER (swin), 5);
  gtk_container_set_border_width (GTK_CONTAINER (viewport), 5);
  
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swin),
                                  GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);  
  gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (swin), table1);
  gtk_container_add (GTK_CONTAINER (viewport), table2);
  
  /* Pack the widgets into a GtkVBox and then into the window. */
  vbox = gtk_vbox_new (TRUE, 5);
  gtk_box_pack_start_defaults (GTK_BOX (vbox), viewport);
  gtk_box_pack_start_defaults (GTK_BOX (vbox), swin);
  
  gtk_container_add (GTK_CONTAINER (window), vbox);
  gtk_widget_show_all (window);
  
  gtk_main();
  return 0;
}