How to draw a simple line?

[Bart Vandewoestyne <Bart Vandewoestyne skynet be>]

OK, my program is evolving... next step is to draw some graphs... i just
need some starting help out here...

I have created a function that returns a drawing area.  In that function
I want to do some drawing of basic lines etc (I want to make an X-Y
graph).  Kan somebody fill in this program with a very basic setup that
draws a simple white line on a black background?  I have read the docs
and reference and played a bit around, but i didn't get to see one line
on my screen :-(

This is the function that returns the GtkDrawingArea:

/*
 * drawing.c
 */
 
#include <gtk/gtk.h>
 
GtkWidget *mot_new_drawing_area(void)
{
 GtkWidget *drawing_area;
 
 drawing_area=gtk_drawing_area_new();
 gtk_drawing_area_size(GTK_DRAWING_AREA(drawing_area), 400, 300);
 
 return drawing_area;
}


Thanks for helping me out.
Bart

PS: The full source of my program is on http://hello.to/MC303 -> follow
the link to 'my thesis'.

-- 
Bart Vandewoestyne		http://hello.to/MC303		
Hugo Verrieststraat 48		Bart.Vandewoestyne@skynet.be
8550 ZWEVEGEM			ICQ# 21275340
BELGIUM - EUROPE		nick: MC303
Phone: +32(0)56/75.48.11
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