diff --git a/components/rtgui/common/image.c b/components/rtgui/common/image.c
index 0160c990ea..45a1013a69 100644
--- a/components/rtgui/common/image.c
+++ b/components/rtgui/common/image.c
@@ -64,6 +64,23 @@ void rtgui_system_image_init(void)
 #endif
 }
 
+static struct rtgui_image_engine* rtgui_image_get_engine(const char* type)
+{
+	struct rtgui_list_node *node;
+	struct rtgui_image_engine *engine;
+
+	rtgui_list_foreach(node, &_rtgui_system_image_list)
+	{
+		engine = rtgui_list_entry(node, struct rtgui_image_engine, list);
+
+		if (strncasecmp(engine->name, type, strlen(engine->name)) ==0)
+			return engine;
+	}
+
+	return RT_NULL;
+}
+
+#if defined(RTGUI_USING_DFS_FILERW) || defined(RTGUI_USING_STDIO_FILERW)
 static struct rtgui_image_engine* rtgui_image_get_engine_by_filename(const char* fn)
 {
 	struct rtgui_list_node *node;
@@ -88,23 +105,6 @@ static struct rtgui_image_engine* rtgui_image_get_engine_by_filename(const char*
 	return RT_NULL;
 }
 
-static struct rtgui_image_engine* rtgui_image_get_engine(const char* type)
-{
-	struct rtgui_list_node *node;
-	struct rtgui_image_engine *engine;
-
-	rtgui_list_foreach(node, &_rtgui_system_image_list)
-	{
-		engine = rtgui_list_entry(node, struct rtgui_image_engine, list);
-
-		if (strncasecmp(engine->name, type, strlen(engine->name)) ==0)
-			return engine;
-	}
-
-	return RT_NULL;
-}
-
-#if defined(RTGUI_USING_DFS_FILERW) || defined(RTGUI_USING_STDIO_FILERW)
 struct rtgui_image* rtgui_image_create_from_file(const char* type, const char* filename, rt_bool_t load)
 {
 	struct rtgui_filerw* filerw;
diff --git a/components/rtgui/common/rtgui_system.c b/components/rtgui/common/rtgui_system.c
index 5005156ec5..3d9d48445c 100644
--- a/components/rtgui/common/rtgui_system.c
+++ b/components/rtgui/common/rtgui_system.c
@@ -21,7 +21,7 @@
 #include <rtgui/widgets/window.h>
 #include <rtgui/rtgui_theme.h>
 
-// #define RTGUI_EVENT_DEBUG
+#define RTGUI_EVENT_DEBUG
 
 #ifdef _WIN32
 #define RTGUI_EVENT_DEBUG
diff --git a/components/rtgui/include/rtgui/widgets/list_view.h b/components/rtgui/include/rtgui/widgets/list_view.h
index 09f6520b71..28792366c8 100644
--- a/components/rtgui/include/rtgui/widgets/list_view.h
+++ b/components/rtgui/include/rtgui/widgets/list_view.h
@@ -59,7 +59,7 @@ struct rtgui_list_view
     /* the number of item in a page */
     rt_uint16_t page_items;
 	/* current item */
-    rt_uint16_t current_item;
+    rt_int16_t current_item;
 
 	/* icon layout */
 	rt_uint8_t row_items, col_items;
diff --git a/components/rtgui/widgets/list_view.c b/components/rtgui/widgets/list_view.c
index bc88062b87..99783f2cf3 100644
--- a/components/rtgui/widgets/list_view.c
+++ b/components/rtgui/widgets/list_view.c
@@ -96,7 +96,7 @@ static void rtgui_list_view_onicondraw(struct rtgui_list_view* view, struct rtgu
 	}
 }
 
-static void rtgui_list_view_update_icon(struct rtgui_list_view* view, rt_uint16_t old_item)
+static void rtgui_list_view_update_icon(struct rtgui_list_view* view, rt_int16_t old_item)
 {
 	struct rtgui_rect rect, item_rect, drawing_rect;
 	rt_ubase_t c, r; /* col and row index */
@@ -230,7 +230,7 @@ static void rtgui_list_view_onlistdraw(struct rtgui_list_view* view, struct rtgu
 	}
 }
 
-void rtgui_list_view_update_list(struct rtgui_list_view* view, rt_uint16_t old_item)
+void rtgui_list_view_update_list(struct rtgui_list_view* view, rt_int16_t old_item)
 {
 	struct rtgui_dc* dc;
 	const struct rtgui_list_item* item;