diff --git a/examples/gui/SConscript b/examples/gui/SConscript
index 1f198c3018..ac702a1b0c 100644
--- a/examples/gui/SConscript
+++ b/examples/gui/SConscript
@@ -3,6 +3,7 @@ Import('projects')
 
 src = Split("""
 demo_view_dc_buffer.c
+demo_view_instrument_panel.c
 demo_fnview.c
 demo_listview.c
 demo_listview_icon.c
diff --git a/examples/gui/demo_view_animation.c b/examples/gui/demo_view_animation.c
index ca2c892254..fccc7bbea1 100644
--- a/examples/gui/demo_view_animation.c
+++ b/examples/gui/demo_view_animation.c
@@ -104,7 +104,7 @@ rtgui_view_t *demo_view_animation(rtgui_workbench_t* workbench)
 		rtgui_widget_set_event_handler(RTGUI_WIDGET(view), animation_event_handler);
 
 	rtgui_font_get_metrics(RTGUI_WIDGET_FONT(RTGUI_WIDGET(view)), "飞线乱飞", &text_rect);
-
+	rtgui_rect_moveto(&text_rect, 0, 45);
 	/* 启动定时器以触发动画 */
 	timer = rtgui_timer_create(2, RT_TIMER_FLAG_PERIODIC, timeout, (void*)view);
 	rtgui_timer_start(timer);
diff --git a/examples/gui/demo_view_dc.c b/examples/gui/demo_view_dc.c
index c49fde03c8..1b54797594 100644
--- a/examples/gui/demo_view_dc.c
+++ b/examples/gui/demo_view_dc.c
@@ -73,7 +73,22 @@ rt_bool_t dc_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
 		/* 填充一个圆形 */
 		RTGUI_DC_FC(dc) = green;
 		rtgui_dc_fill_circle(dc, rect.x1 + 30, rect.y1 + 10, 10);
+		
+		/* 画一个圆角矩形 */
+		rect.x1 = 150;
+		rect.y1 = 180;
+		rect.x2 = 210;
+		rect.y2 = 260;
+		RTGUI_DC_FC(dc) = RTGUI_RGB(25, 70, 150);
+		rtgui_dc_draw_round_rect(dc, &rect, 10);
 
+		rect.x1 = 160;
+		rect.y1 = 190;
+		rect.x2 = 200;
+		rect.y2 = 250;
+		RTGUI_DC_FC(dc) = RTGUI_RGB(170, 7, 80);
+		rtgui_dc_fill_round_rect(dc, &rect, 7);
+		
 		/* 画一个圆弧 */
 		RTGUI_DC_FC(dc) = RTGUI_RGB(250, 120, 120);
 		rtgui_dc_draw_arc(dc, rect.x1 + 120, rect.y1 + 60, 30, 0, 120);
@@ -135,7 +150,7 @@ rt_bool_t dc_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
 			rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_EXTRA);
 			rect.x1 += 20;
 			rect.x2 += 20 + 50;
-			rtgui_dc_draw_text(dc, "extra", &rect);
+			rtgui_dc_draw_text(dc, "额外", &rect);
 			rect.x1 -= 20;
 			rect.x2 -= 20 + 50;
 			rect.y1 += 20;
diff --git a/examples/gui/demo_view_instrument_panel.c b/examples/gui/demo_view_instrument_panel.c
index bf9144db3e..61849f00d2 100644
--- a/examples/gui/demo_view_instrument_panel.c
+++ b/examples/gui/demo_view_instrument_panel.c
@@ -31,8 +31,8 @@ rt_bool_t instrument_panel_event_handler(rtgui_widget_t* widget, rtgui_event_t *
 		rtgui_rect_t rect;
 		const int vx[] = {85, 85,  105, 105};
 		const int vy[] = {60, 100, 100, 60}; 
-		const int arrowx[] = {x0+75, x0+75, x0+85};
-		const int arrowy[] = {y0-5,  y0+5,  y0};
+		const int arrowx[] = {120+75, 120+75, 120+85};
+		const int arrowy[] = {170-5,  170+5,  170};
 
 		/*
 		 * 因为用的是demo view，上面本身有一部分控件，所以在绘图时先要让demo view
@@ -85,7 +85,7 @@ rt_bool_t instrument_panel_event_handler(rtgui_widget_t* widget, rtgui_event_t *
 			rect.y1 = y;
 			rect.x2 = rect.x1 + 12 * 3;
 			rect.y2 = rect.y1 + 12;
-			sprintf(ac, "%d", 10 * i);
+			rt_sprintf(ac, "%d", 10 * i);
 			rtgui_dc_draw_text(dc, ac, &rect);	
 		}
 		else
@@ -99,7 +99,7 @@ rt_bool_t instrument_panel_event_handler(rtgui_widget_t* widget, rtgui_event_t *
 			rect.y1 = y;
 			rect.x2 = rect.x1 + 12 * 3;
 			rect.y2 = rect.y1 + 12;
-			sprintf(ac, "%d", 10 * i);
+			rt_sprintf(ac, "%d", 10 * i);
 			rtgui_dc_draw_text(dc, ac, &rect);
 		}
 
diff --git a/examples/gui/demo_workbench.c b/examples/gui/demo_workbench.c
index 6569d475b5..4dad64c5e9 100644
--- a/examples/gui/demo_workbench.c
+++ b/examples/gui/demo_workbench.c
@@ -65,6 +65,7 @@ static void workbench_entry(void* parameter)
 	demo_view_dc_buffer(workbench);
 	demo_view_animation(workbench);
 	demo_view_buffer_animation(workbench);
+	demo_view_instrument_panel(workbench);
 	demo_view_window(workbench);
 	demo_view_label(workbench);
 	demo_view_button(workbench);