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

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

#define HORIZ 50
#define VERT 30
#define WIDTH (HORIZ * 5)
#define HEIGHT (VERT * 5)

int main(int argc,char *argv[])
{
    GtkWidget *app;
    GtkWidget *canvas;
    GtkWidget *button;
    GnomeCanvasGroup *rootGroup;
    GnomeCanvasItem *item;

    gnome_init("canvaswidget","1.0",argc,argv);
    app = gnome_app_new("canvaswidget",
            "Gnome Canvas Widget");
    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);

    canvas = gnome_canvas_new();
    gtk_widget_set_usize(canvas,WIDTH,HEIGHT);
    gnome_canvas_set_scroll_region(GNOME_CANVAS(canvas),
            0.0,0.0,WIDTH,HEIGHT);
    rootGroup = gnome_canvas_root(GNOME_CANVAS(canvas));
    gnome_app_set_contents(GNOME_APP(app),canvas);

    button = gtk_button_new_with_label("Button 1");
    item = gnome_canvas_item_new(rootGroup,
                    gnome_canvas_widget_get_type(),
                    "widget",button,
                    "x",(double)(HORIZ),
                    "y",(double)(VERT),
                    "width",(double)(HORIZ),
                    "height",(double)(VERT),
                    "anchor",GTK_ANCHOR_NW,
                    NULL);

    button = gtk_button_new_with_label("Button 2");
    item = gnome_canvas_item_new(rootGroup,
                    gnome_canvas_widget_get_type(),
                    "widget",button,
                    "x",(double)(HORIZ * 3),
                    "y",(double)(VERT),
                    "width",(double)(HORIZ),
                    "height",(double)(VERT),
                    "anchor",GTK_ANCHOR_NW,
                    NULL);
    button = gtk_button_new_with_label("Button Three");
    item = gnome_canvas_item_new(rootGroup,
                    gnome_canvas_widget_get_type(),
                    "widget",button,
                    "x",(double)(HORIZ),
                    "y",(double)(VERT * 3),
                    "width",(double)(HORIZ * 3),
                    "height",(double)(VERT),
                    "anchor",GTK_ANCHOR_NW,
                    NULL);

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