Re: Newbie and drawing_area

[Mariusz Bozewicz <plachninka wp pl>]

On Tue, 4 Dec 2001, Clemens Kirchgatterer wrote:

> Mariusz Bozewicz wrote:
> > Hello
>
> > I still have a problem with drawing area. I looked lissajoux's code.
> > My program is similar to lissajou, but something goes wrong.
> > Could you help me with my simple code (code is as attachment)?
>
> it's not that easy. it took my some minutes to find the solution! ;-)
> a fixed version of your program is attached ...
>
> best regards ...
> clemens
GtkWidget *area;


void line (gint x,gint y, gint x1,gint y1)
{
        gdk_draw_line(area->window,area->style->black_gc,x,y,x1,y1);
}
gint repaint(GtkWidget *w, gpointer d)
{
        line (10,10,300,50);
        return FALSE;
}



.....
gtk_signal_connect(GTK_OBJECT(area),"expose_event",
                        GTK_SIGNAL_FUNC(repaint),NULL);

....
So, if I want to draw directly into drawing area I should use
signal: expose_event. Am I right?
                        Mariusz Bozewicz