diff --git a/components/rtgui/include/rtgui/rtgui.h b/components/rtgui/include/rtgui/rtgui.h
index b473b9d794..d35e17ec5e 100644
--- a/components/rtgui/include/rtgui/rtgui.h
+++ b/components/rtgui/include/rtgui/rtgui.h
@@ -31,7 +31,7 @@ struct rtgui_font;
 typedef struct rtgui_win rtgui_win_t;
 typedef struct rtgui_workbench rtgui_workbench_t;
 typedef rt_bool_t (*rtgui_event_handler_ptr)(struct rtgui_object* widget, struct rtgui_event* event);
-typedef void (*rtgui_onbutton_func_t)(struct rtgui_widget* widget, struct rtgui_event* event);
+typedef void (*rtgui_onbutton_func_t)(struct rtgui_object* object, struct rtgui_event* event);
 
 struct rtgui_point
 {
diff --git a/components/rtgui/include/rtgui/rtgui_config.h b/components/rtgui/include/rtgui/rtgui_config.h
index f1dae17ca8..33ae2ee061 100644
--- a/components/rtgui/include/rtgui/rtgui_config.h
+++ b/components/rtgui/include/rtgui/rtgui_config.h
@@ -77,5 +77,5 @@
 //#define RTGUI_USING_DESKTOP_WINDOW
 
 #define  RTGUI_EVENT_DEBUG
-
+#undef RTGUI_USING_SMALL_SIZE
 #endif
diff --git a/components/rtgui/include/rtgui/widgets/box.h b/components/rtgui/include/rtgui/widgets/box.h
index 0e0b814e8b..370b9820d3 100644
--- a/components/rtgui/include/rtgui/widgets/box.h
+++ b/components/rtgui/include/rtgui/widgets/box.h
@@ -43,7 +43,7 @@ typedef struct rtgui_box rtgui_box_t;
 struct rtgui_box* rtgui_box_create(int orientation, rtgui_rect_t* rect);
 void rtgui_box_destroy(struct rtgui_box* box);
 
-rt_bool_t rtgui_box_event_handler(rtgui_widget_t* widget, rtgui_event_t* event);
+rt_bool_t rtgui_box_event_handler(struct rtgui_object* object, rtgui_event_t* event);
 
 void rtgui_box_append(rtgui_box_t* box, rtgui_widget_t* widget);
 void rtgui_box_layout(rtgui_box_t* box);
diff --git a/components/rtgui/include/rtgui/widgets/button.h b/components/rtgui/include/rtgui/widgets/button.h
index 0d7678d358..b149c5a2a2 100644
--- a/components/rtgui/include/rtgui/widgets/button.h
+++ b/components/rtgui/include/rtgui/widgets/button.h
@@ -57,7 +57,7 @@ struct rtgui_button
 	rtgui_image_t *pressed_image, *unpressed_image;
 
 	/* click button event handler */
-	void (*on_button)(struct rtgui_widget* widget, rtgui_event_t *event);
+	rtgui_onbutton_func_t on_button;
 };
 typedef struct rtgui_button rtgui_button_t;
 
diff --git a/components/rtgui/include/rtgui/widgets/checkbox.h b/components/rtgui/include/rtgui/widgets/checkbox.h
index bf226e061e..c23b5d79a1 100644
--- a/components/rtgui/include/rtgui/widgets/checkbox.h
+++ b/components/rtgui/include/rtgui/widgets/checkbox.h
@@ -26,7 +26,7 @@ struct rtgui_checkbox
 	rt_uint8_t status_down;
 
 	/* click button event handler */
-	void (*on_button)(struct rtgui_widget* widget, rtgui_event_t *event);
+	rtgui_onbutton_func_t on_button;
 };
 typedef struct rtgui_checkbox rtgui_checkbox_t;
 
diff --git a/components/rtgui/widgets/button.c b/components/rtgui/widgets/button.c
index a10d04ebbf..aab1333b56 100644
--- a/components/rtgui/widgets/button.c
+++ b/components/rtgui/widgets/button.c
@@ -95,7 +95,7 @@ rt_bool_t rtgui_button_event_handler(struct rtgui_object* object, struct rtgui_e
 				if ((btn->flag & RTGUI_BUTTON_FLAG_PRESS) && (btn->on_button != RT_NULL))
 				{
 					/* call on button handler */
-					btn->on_button(widget, event);
+					btn->on_button(RTGUI_OBJECT(widget), event);
 				}
 			}
 		}
@@ -137,14 +137,14 @@ rt_bool_t rtgui_button_event_handler(struct rtgui_object* object, struct rtgui_e
 					if (btn->on_button != RT_NULL)
 					{
 						/* call on button handler */
-						btn->on_button(widget, event);
+						btn->on_button(RTGUI_OBJECT(widget), event);
 					}
 
 #ifndef RTGUI_USING_SMALL_SIZE
 					/* invokes call back */
 					if (widget->on_mouseclick != RT_NULL &&
 						emouse->button & RTGUI_MOUSE_BUTTON_UP)
-						return widget->on_mouseclick(widget, event);
+						return widget->on_mouseclick(RTGUI_OBJECT(widget), event);
 #endif
 				}
 			}
@@ -175,13 +175,13 @@ rt_bool_t rtgui_button_event_handler(struct rtgui_object* object, struct rtgui_e
 					/* invokes call back */
 					if (widget->on_mouseclick != RT_NULL &&
 						emouse->button & RTGUI_MOUSE_BUTTON_UP)
-						return widget->on_mouseclick(widget, event);
+						return widget->on_mouseclick(RTGUI_OBJECT(widget), event);
 #endif
 
 					if (!(btn->flag & RTGUI_BUTTON_FLAG_PRESS) && (btn->on_button != RT_NULL))
 					{
 						/* call on button handler */
-						btn->on_button(widget, event);
+						btn->on_button(RTGUI_OBJECT(widget), event);
 					}
 				}
 
diff --git a/components/rtgui/widgets/checkbox.c b/components/rtgui/widgets/checkbox.c
index 78c3cd97c8..6a682903d0 100644
--- a/components/rtgui/widgets/checkbox.c
+++ b/components/rtgui/widgets/checkbox.c
@@ -46,7 +46,7 @@ rt_bool_t rtgui_checkbox_event_handler(struct rtgui_object* object, struct rtgui
 #ifndef RTGUI_USING_SMALL_SIZE
 		if (widget->on_draw != RT_NULL)
 		{
-			return widget->on_draw(widget, event);
+			return widget->on_draw(RTGUI_OBJECT(widget), event);
 		}
 		else
 #endif
@@ -83,12 +83,12 @@ rt_bool_t rtgui_checkbox_event_handler(struct rtgui_object* object, struct rtgui
 				/* call user callback */
 				if (widget->on_mouseclick != RT_NULL)
 				{
-					return widget->on_mouseclick(widget, event);
+					return widget->on_mouseclick(RTGUI_OBJECT(widget), event);
 				}
 #endif
 				if (box->on_button != RT_NULL)
 				{
-					box->on_button(widget, event);
+					box->on_button(RTGUI_OBJECT(widget), event);
 					return RT_TRUE;
 				}
 			}
diff --git a/components/rtgui/widgets/combobox.c b/components/rtgui/widgets/combobox.c
index 282a975f08..5b3010677c 100644
--- a/components/rtgui/widgets/combobox.c
+++ b/components/rtgui/widgets/combobox.c
@@ -194,9 +194,7 @@ static rt_bool_t rtgui_combobox_onmouse_button(struct rtgui_combobox* box, struc
 rt_bool_t rtgui_combobox_event_handler(struct rtgui_object* object, struct rtgui_event* event)
 {
 	struct rtgui_combobox *box;
-
-	RT_ASSERT(object != RT_NULL);
-	RT_ASSERT(event != RT_NULL);
+	RTGUI_WIDGET_EVENT_HANDLER_PREPARE
 
 	box = RTGUI_COMBOBOX(object);
 
@@ -204,7 +202,8 @@ rt_bool_t rtgui_combobox_event_handler(struct rtgui_object* object, struct rtgui
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
 		else
 #endif
 			rtgui_combobox_ondraw(box);
diff --git a/components/rtgui/widgets/iconbox.c b/components/rtgui/widgets/iconbox.c
index 1ba74e3ce2..03db07bd83 100644
--- a/components/rtgui/widgets/iconbox.c
+++ b/components/rtgui/widgets/iconbox.c
@@ -49,9 +49,7 @@ DEFINE_CLASS_TYPE(iconbox, "iconbox",
 rt_bool_t rtgui_iconbox_event_handler(struct rtgui_object* object, struct rtgui_event* event)
 {
 	struct rtgui_iconbox* iconbox;
-
-	RT_ASSERT(object != RT_NULL);
-	RT_ASSERT(event != RT_NULL);
+	RTGUI_WIDGET_EVENT_HANDLER_PREPARE
 
 	iconbox = RTGUI_ICONBOX(object);
 
@@ -59,7 +57,8 @@ rt_bool_t rtgui_iconbox_event_handler(struct rtgui_object* object, struct rtgui_
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
diff --git a/components/rtgui/widgets/radiobox.c b/components/rtgui/widgets/radiobox.c
index b886c584c4..b1def7af01 100644
--- a/components/rtgui/widgets/radiobox.c
+++ b/components/rtgui/widgets/radiobox.c
@@ -86,7 +86,8 @@ rt_bool_t rtgui_radiobox_event_handler(struct rtgui_object* object, struct rtgui
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
@@ -99,7 +100,8 @@ rt_bool_t rtgui_radiobox_event_handler(struct rtgui_object* object, struct rtgui
 		if (RTGUI_WIDGET_IS_HIDE(RTGUI_WIDGET(radiobox))) return RT_FALSE;
 
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_key != RT_NULL) widget->on_key(widget, event);
+		if (widget->on_key != RT_NULL)
+			widget->on_key(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
@@ -140,7 +142,8 @@ rt_bool_t rtgui_radiobox_event_handler(struct rtgui_object* object, struct rtgui
 
 	case RTGUI_EVENT_MOUSE_BUTTON:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_mouseclick != RT_NULL) widget->on_mouseclick(widget, event);
+		if (widget->on_mouseclick != RT_NULL)
+			widget->on_mouseclick(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
diff --git a/components/rtgui/widgets/scrollbar.c b/components/rtgui/widgets/scrollbar.c
index 58a3017b3c..257591a028 100644
--- a/components/rtgui/widgets/scrollbar.c
+++ b/components/rtgui/widgets/scrollbar.c
@@ -274,7 +274,8 @@ rt_bool_t rtgui_scrollbar_event_handler(struct rtgui_object *object,
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
@@ -289,7 +290,7 @@ rt_bool_t rtgui_scrollbar_event_handler(struct rtgui_object *object,
 #ifndef RTGUI_USING_SMALL_SIZE
 			if (widget->on_mouseclick != RT_NULL)
 			{
-				widget->on_mouseclick(widget, event);
+				widget->on_mouseclick(RTGUI_OBJECT(widget), event);
 			}
 			else
 #endif
diff --git a/components/rtgui/widgets/slider.c b/components/rtgui/widgets/slider.c
index 30d29d84f9..ca71fdfaad 100644
--- a/components/rtgui/widgets/slider.c
+++ b/components/rtgui/widgets/slider.c
@@ -153,7 +153,8 @@ rt_bool_t rtgui_slider_event_handler(struct rtgui_object *object, struct rtgui_e
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
@@ -166,7 +167,8 @@ rt_bool_t rtgui_slider_event_handler(struct rtgui_object *object, struct rtgui_e
 		if (!RTGUI_WIDGET_IS_ENABLE(widget) || RTGUI_WIDGET_IS_HIDE(widget)) return RT_FALSE;
 
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_key != RT_NULL) widget->on_key(widget, event);
+		if (widget->on_key != RT_NULL)
+			widget->on_key(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
@@ -178,7 +180,8 @@ rt_bool_t rtgui_slider_event_handler(struct rtgui_object *object, struct rtgui_e
 		if (!RTGUI_WIDGET_IS_ENABLE(widget) || RTGUI_WIDGET_IS_HIDE(widget)) return RT_FALSE;
 
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_mouseclick != RT_NULL) widget->on_mouseclick(widget, event);
+		if (widget->on_mouseclick != RT_NULL)
+			widget->on_mouseclick(RTGUI_OBJECT(widget), event);
 		else
 #endif
 		{
diff --git a/components/rtgui/widgets/staticline.c b/components/rtgui/widgets/staticline.c
index 19a1caed49..10bdd8bad8 100644
--- a/components/rtgui/widgets/staticline.c
+++ b/components/rtgui/widgets/staticline.c
@@ -30,7 +30,8 @@ rt_bool_t rtgui_staticline_event_handler(struct rtgui_object* object, struct rtg
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
 		else
 #endif
 			rtgui_theme_draw_staticline(staticline);
diff --git a/components/rtgui/widgets/textbox.c b/components/rtgui/widgets/textbox.c
index 15f2bd44ef..a28b3ec5f9 100644
--- a/components/rtgui/widgets/textbox.c
+++ b/components/rtgui/widgets/textbox.c
@@ -264,8 +264,9 @@ rt_bool_t rtgui_textbox_event_handler(struct rtgui_object* object, struct rtgui_
 	{
 	case RTGUI_EVENT_PAINT:
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
-		else 
+		if (widget->on_draw != RT_NULL)
+			widget->on_draw(RTGUI_OBJECT(widget), event);
+		else
 #endif
 			rtgui_theme_draw_textbox(box);
 		break;
@@ -274,8 +275,9 @@ rt_bool_t rtgui_textbox_event_handler(struct rtgui_object* object, struct rtgui_
 		if (!RTGUI_WIDGET_IS_ENABLE(widget) || RTGUI_WIDGET_IS_HIDE(widget)) return RT_FALSE;
 
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_mouseclick != RT_NULL) widget->on_mouseclick(widget, event);
-		else 
+		if (widget->on_mouseclick != RT_NULL)
+			widget->on_mouseclick(RTGUI_OBJECT(widget), event);
+		else
 #endif
 			rtgui_textbox_onmouse(box, (struct rtgui_event_mouse*)event);
 		return RT_TRUE;
@@ -284,7 +286,8 @@ rt_bool_t rtgui_textbox_event_handler(struct rtgui_object* object, struct rtgui_
 		if (!RTGUI_WIDGET_IS_ENABLE(widget) || RTGUI_WIDGET_IS_HIDE(widget)) return RT_FALSE;
 
 #ifndef RTGUI_USING_SMALL_SIZE
-		if (widget->on_key != RT_NULL) widget->on_key(widget, event);
+		if (widget->on_key != RT_NULL)
+			widget->on_key(RTGUI_OBJECT(widget), event);
 		else 
 #endif
 			rtgui_textbox_onkey(box, (struct rtgui_event_kbd*)event);
diff --git a/examples/gui/demo_view.c b/examples/gui/demo_view.c
index d19ee9ac3d..b1c1d657aa 100644
--- a/examples/gui/demo_view.c
+++ b/examples/gui/demo_view.c
@@ -130,6 +130,7 @@ void demo_view_get_logic_rect(rtgui_container_t* container, rtgui_rect_t *rect)
 
 /* 当是标准版本时，这个函数用于返回自动布局引擎box控件 */
 #ifndef RTGUI_USING_SMALL_SIZE
+#include <rtgui/widgets/box.h>
 struct rtgui_box* demo_view_create_box(struct rtgui_container *container, int orient)
 {
 	rtgui_rect_t rect;