/** rectangles.c **/
#include <gnome.h>

gint eventDelete(GtkWidget *widget,
        GdkEvent *event,gpointer data);
gint eventDestroy(GtkWidget *widget,
        GdkEvent *event,gpointer data);
gboolean eventDraw(GtkWidget *widget,
        GdkEvent *event,gpointer data);

#define HORIZ 50
#define VERT 60
#define WIDTH (HORIZ * 10)
#define HEIGHT (VERT * 3)

int main(int argc,char *argv[])
{
    GtkWidget *app;
    GtkWidget *area;

    gnome_init("rectangles","1.0",argc,argv);
    app = gnome_app_new("rectangles","Drawing Rectangles");
    gtk_signal_connect(GTK_OBJECT(app),"delete_event",
            GTK_SIGNAL_FUNC(eventDelete),NULL);
    gtk_signal_connect(GTK_OBJECT(app),"destroy",
            GTK_SIGNAL_FUNC(eventDestroy),NULL);

    area = gtk_drawing_area_new();
    gtk_widget_set_usize(area,WIDTH,HEIGHT);
    gnome_app_set_contents(GNOME_APP(app),area);

    gtk_signal_connect(GTK_OBJECT(area),"event",
            GTK_SIGNAL_FUNC(eventDraw),NULL);

    gtk_widget_show_all(app);
    gtk_main();
    exit(0);
}
gboolean eventDraw(GtkWidget *widget,
        GdkEvent *event,gpointer data) {
    gint x;
    gint y;
    gint width = HORIZ * 2;
    gint height = VERT;
    
    x = HORIZ;
    y = VERT;
    gdk_draw_rectangle(widget->window,
            widget->style->black_gc,
            FALSE,
            x,y,
            width,height);

    x = HORIZ * 4;
    gdk_draw_rectangle(widget->window,
            widget->style->white_gc,
            TRUE,
            x,y,
            width,height);

    x = HORIZ * 7;
    gdk_draw_rectangle(widget->window,
            widget->style->white_gc,
            TRUE,
            x,y,
            width,height);
    gdk_draw_rectangle(widget->window,
            widget->style->black_gc,
            FALSE,
            x,y,
            width,height);

    return(TRUE);
}
gint eventDelete(GtkWidget *widget,
        GdkEvent *event,gpointer data) {
    return(FALSE);
}
gint eventDestroy(GtkWidget *widget,
        GdkEvent *event,gpointer data) {
    gtk_main_quit();
    return(0);
}