gtk_drawing_area: what am i missing?

[Andy Kahn <kahn zk3 dec com>]

hi all,

i'm trying to use gtk_drawing_area_new() to create a new drawing area,
and then manually using gdk_draw_string() to draw a text string inside
of it.  however, all i get is a blank window.  the code is as follows:


----------------------------------cut here------------------------------------
#include <stdio.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>

static void
expose_me(GtkWidget *widget, gpointer data)
{
	GdkFont *font;

	font = gdk_font_load ("-Adobe-Helvetica-Bold-R-Normal--*-140-*-*-*-*-*-*");
	if (font == NULL)
		printf("font is NULL\n");
	gdk_draw_string (widget->window, font, widget->style->black_gc,
		350, 110, "test a;slk jf;lakshdjf ;lj ;lj ;;lakjsd fl;kj");
}

int main (int argc, char **argv)
{
	GtkWidget *window, *widget;

	gtk_init (&argc, &argv);

	window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	gtk_container_border_width (GTK_CONTAINER (window), 10);

	widget = gtk_drawing_area_new ();
	gtk_signal_connect (GTK_OBJECT (widget), "expose_event",
			GTK_SIGNAL_FUNC (expose_me), NULL);
	gtk_drawing_area_size (GTK_DRAWING_AREA (widget), 350, 110);

	gtk_container_add (GTK_CONTAINER (window), widget);

	gtk_widget_show (widget);
	gtk_widget_show (window);

	gtk_main ();

	return 0;
}
----------------------------------cut here------------------------------------


what am i missing here??

any help would be appreciated.  thanks!!
--andy