problem with bitmaps

[Robert Wilhelm <robert physiol med tu-muenchen de>]

I cannot get a bitmap displayed in a window.

The test program shows a completely black box
in the upper left corner.

Could somebody point out what I am doing wrong here?

Robert


#include <gtk/gtk.h>

#define bm_width 16
#define bm_height 16
static unsigned char bm_bits[] = {

        136,136,        /*  1000100010001000            */
         17, 17,        /*  0001000100010001            */
         34, 34,        /*  0010001000100010            */
         68, 68,        /*  0100010001000100            */
        136,136,        /*  1000100010001000            */
         17, 17,        /*  0001000100010001            */
         34, 34,        /*  0010001000100010            */
         68, 68,        /*  0100010001000100            */
        136,136,        /*  1000100010001000            */
         17, 17,        /*  0001000100010001            */
         34, 34,        /*  0010001000100010            */
         68, 68,        /*  0100010001000100            */
        136,136,        /*  1000100010001000            */
         17, 17,        /*  0001000100010001            */
         34, 34,        /*  0010001000100010            */
         68, 68         /*  0100010001000100            */
        };


int main (int argc, char *argv[])
{
  GtkWidget *window, *gtk_img; 
//  GtkTable* board;
  GtkWidget* board;
  GdkImage *image;


  gtk_init (&argc, &argv);
  
  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

  board = gtk_table_new( 2, 2, TRUE);

  image = gdk_image_new_bitmap(gdk_visual_get_system(),
                               bm_bits,bm_width,bm_height);
			  	
  gtk_img = gtk_image_new(image, NULL);

  gtk_table_attach_defaults(board,gtk_img,0,1,0,1);

  gtk_container_add(GTK_CONTAINER(window), board);

  gtk_widget_show(gtk_img);
  gtk_widget_show(board);
  gtk_widget_show (window);

  gtk_main ();
           
  return 0;
}