compiling problem of gtkpixbuf

["yangxiaoli" <yanggolf@yeah.net>]

hello:
	From tutorial I get a program about pixbuf.When I compiled it using command:
gcc pixbuf.c -o pixbuf 'pkg-config gtk+-2.0 --cfalgs --libs'

has an error:
pixbuf.c:In function 'main'
pixbuf.c:25:warning:implicit declaration of function 'gtk_signal_connect'
/tmp/ccWsnI1r.o In function 'main'
/tmp/ccWsnI1r.o(.text+0x92):undefined reference to 'gtk_signal_connect'
collect2:ld returned 1 exit status

how can I find 'gtk_signal_connect'?

below is my pixbuf.c from tutorial:

#include <gtk/gtk.h>

#define IMAGE_WIDTH	256
#define IMAGE_HEIGHT	256

guchar rgbbuf[IMAGE_WIDTH * IMAGE_HEIGHT * 3];

gboolean on_darea_expose (GtkWidget *widget,
			  GdkEventExpose *event,
			  gpointer user_data);

int
main (int argc, char *argv[])
{
  GtkWidget *window, *darea;
  gint x, y;
  guchar *pos;

  gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  darea = gtk_drawing_area_new ();
  gtk_widget_set_size_request (darea, IMAGE_WIDTH, IMAGE_HEIGHT);
  gtk_container_add (GTK_CONTAINER (window), darea);
  gtk_signal_connect (GTK_OBJECT (darea), "expose-event",
                      GTK_SIGNAL_FUNC (on_darea_expose), NULL);
  gtk_widget_show_all (window);

  /* Set up the RGB buffer. */
  pos = rgbbuf;
  for (y = 0; y < IMAGE_HEIGHT; y++)
    {
      for (x = 0; x < IMAGE_WIDTH; x++)
	{
	  *pos++ = x - x % 32;			/* Red. */
	  *pos++ = (x / 32) * 4 + y - y % 32;	/* Green. */
	  *pos++ = y - y % 32;			/* Blue. */
	}
    }

  gtk_main ();
  return 0;
}


gboolean
on_darea_expose (GtkWidget *widget,
		 GdkEventExpose *event,
		 gpointer user_data)
{
  gdk_draw_rgb_image (widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
		      0, 0, IMAGE_WIDTH, IMAGE_HEIGHT,
		      GDK_RGB_DITHER_MAX, rgbbuf, IMAGE_WIDTH * 3);

  return TRUE;
}

========================= 				
yangxiaoli
yanggolf@yeah.net
2003-06-03