+ case BUTTON_A:
+ display_fill_screen(DISPLAY_FILL_W);
+ break;
+ case BUTTON_B:
+ display_fill_screen(DISPLAY_FILL_LG);
+ break;
+ case BUTTON_C:
+ display_fill_screen(DISPLAY_FILL_DG);
+ break;
+ case BUTTON_D:
+ display_fill_screen(DISPLAY_FILL_B);
+ break;
+ case BUTTON_1:
+ display_draw_rectangle(20,20,40,40,
+ DISPLAY_FILL_B,
+ 0);
+ break;
+ case BUTTON_2:
+ display_draw_rectangle(50,50,40,40,
+ DISPLAY_FILL_LG,
+ 0);