Gtk 그리기

GtkWidget *drawarea;
14 GdkGC *line_gc;
15 drawarea = lookup_widget(widget, "drawingarea1");
16 line_gc = GTK_WIDGET(drawarea)->style->black_gc;
17 gdk_draw_line(GTK_WIDGET(drawarea)->window, line_gc, 200, 200, 100, 100);