diff --git a/components/gui/include/rtgui/event.h b/components/gui/include/rtgui/event.h
index 78f269a2393e354865d3e43e9d0c3887551a23e8..d1a8070af48e4a38fc6c8c4ab6abf22a7b2a40af 100644
--- a/components/gui/include/rtgui/event.h
+++ b/components/gui/include/rtgui/event.h
@@ -343,7 +343,7 @@ struct rtgui_event_gesture
 
     enum rtgui_gesture_type type;
 
-    rt_uint32_t	win_acti_cnt;		/* win id */
+    rt_uint32_t	win_acti_cnt;		/* window activate count */
 };
 
 /*
@@ -362,7 +362,7 @@ struct rtgui_event_mouse
      * different id. id should never be 0. */
     rt_uint32_t id;
 
-    rt_uint32_t	win_acti_cnt;		/* win id */
+    rt_uint32_t	win_acti_cnt;		/* window activate count */
 };
 #define RTGUI_MOUSE_BUTTON_LEFT         0x01
 #define RTGUI_MOUSE_BUTTON_RIGHT        0x02
@@ -383,7 +383,7 @@ struct rtgui_event_kbd
 {
     _RTGUI_EVENT_WIN_ELEMENTS
 
-    rt_uint32_t	win_acti_cnt;		/* win id */
+    rt_uint32_t	win_acti_cnt;		/* window activate count */
 
     rt_uint16_t type;       /* key down or up */
     rt_uint16_t key;        /* current key */
diff --git a/components/gui/include/rtgui/rtgui.h b/components/gui/include/rtgui/rtgui.h
index 8f8fecb086948ded25c3390f20d0e6b1dc3a7040..b918c78be152fc6306ff642a5c04830031122b7a 100644
--- a/components/gui/include/rtgui/rtgui.h
+++ b/components/gui/include/rtgui/rtgui.h
@@ -173,7 +173,7 @@ enum RTGUI_MODAL_CODE
 {
     RTGUI_MODAL_OK,
     RTGUI_MODAL_CANCEL,
-    RTGUI_MODAL_MAX = 0xFFFFFFFF,
+    RTGUI_MODAL_MAX = 0xFFFF,
 };
 typedef enum RTGUI_MODAL_CODE rtgui_modal_code_t;
 
diff --git a/components/gui/src/font_freetype.c b/components/gui/src/font_freetype.c
index 0ec954945ea51453e71a8e132144045a4cbf0edb..e9a5ce008c1d84ed5ca80d6db9f05a2f5b8079f3 100644
--- a/components/gui/src/font_freetype.c
+++ b/components/gui/src/font_freetype.c
@@ -62,6 +62,8 @@ extern unsigned short ff_convert(unsigned short wch, int direction);
 #define gb2312tounicode(code) ff_convert(code, 1)
 #endif
 
+#ifndef UTF8_TO_UNICODE
+
 static void gbk_to_unicode(rt_uint16_t *unicode, const char *text, int len)
 {
     int i;
@@ -91,6 +93,8 @@ static void gbk_to_unicode(rt_uint16_t *unicode, const char *text, int len)
     *unicode = '\0';
 }
 
+#else
+
 static rt_uint16_t _get_unicode(const char* str, int n)
 {
     int i;
@@ -244,6 +248,7 @@ static int utf8_to_unicode(rt_uint16_t* unicode, const char* utf8, int len)
     return index;
 }
 
+#endif
 
 static void _rtgui_rect_move_to_align(const rtgui_rect_t *rect, rtgui_rect_t *to, rt_uint16_t height, int align)
 {
@@ -574,7 +579,6 @@ static void ftc_draw_text(struct rtgui_font *font,
     struct rtgui_ttf_font *ttf_font;
     rt_int16_t begin_x, btm_y;
     rt_int16_t topy;
-    rt_uint8_t a, r, g, b;
     rtgui_color_t fgc;
     struct rtgui_rect text_rect;
 
diff --git a/components/gui/src/rtgui_app.c b/components/gui/src/rtgui_app.c
index c7210c12c473bca213fc5be21c14edb2eee1612c..758c898b6d2b2db04d5c5229e4fcd324cc070d02 100644
--- a/components/gui/src/rtgui_app.c
+++ b/components/gui/src/rtgui_app.c
@@ -286,7 +286,7 @@ rt_bool_t rtgui_app_event_handler(struct rtgui_object *object, rtgui_event_t *ev
 
     case RTGUI_EVENT_WIN_ACTIVATE:
     {
-        app->win_acti_cnt++;
+        app->win_acti_cnt ++;
         _rtgui_application_dest_handle(app, event);
     }
     break;
diff --git a/components/gui/src/rtgui_system.c b/components/gui/src/rtgui_system.c
index 8cdfe763c7e80e8ac39e822e2c8efe025c7d5104..1803c9cf66853b22d213d017ab72f8dd141c15d4 100644
--- a/components/gui/src/rtgui_system.c
+++ b/components/gui/src/rtgui_system.c
@@ -87,6 +87,7 @@ INIT_APP_EXPORT(rtgui_system_server_init);
 /************************************************************************/
 static void rtgui_time_out(void *parameter)
 {
+    rt_err_t result;
     rtgui_timer_t *timer;
     rtgui_event_timer_t event;
     timer = (rtgui_timer_t *)parameter;
@@ -103,7 +104,11 @@ static void rtgui_time_out(void *parameter)
     event.timer = timer;
     timer->pending_cnt++;
 
-    rtgui_send(timer->app, &(event.parent), sizeof(rtgui_event_timer_t));
+    result = rtgui_send(timer->app, &(event.parent), sizeof(rtgui_event_timer_t));
+    if (result == RT_EOK)
+    {
+        timer->pending_cnt++;
+    }
 }
 
 rtgui_timer_t *rtgui_timer_create(rt_int32_t time, rt_int32_t flag, rtgui_timeout_func timeout, void *parameter)
@@ -417,7 +422,7 @@ const char *rtgui_event_string[] =
     "WIN_CLOSE",            /* close a window       */
     "WIN_MOVE",             /* move a window        */
     "WIN_RESIZE",           /* resize a window      */
-	"WIN_UPDATE_END",
+    "WIN_UPDATE_END",
     "WIN_MODAL_ENTER",          /* a window modals      */
 
     "SET_WM",               /* set window manager   */
@@ -547,8 +552,8 @@ static void rtgui_event_dump(struct rtgui_app* app, rtgui_event_t *event)
     break;
 
     case RTGUI_EVENT_WIN_ACTIVATE:
-	case RTGUI_EVENT_WIN_DESTROY:
-	case RTGUI_EVENT_WIN_CLOSE:
+    case RTGUI_EVENT_WIN_DESTROY:
+    case RTGUI_EVENT_WIN_CLOSE:
     case RTGUI_EVENT_WIN_DEACTIVATE:
     case RTGUI_EVENT_WIN_SHOW:
     case RTGUI_EVENT_WIN_HIDE:
diff --git a/components/gui/src/server.c b/components/gui/src/server.c
index 75e7879aa448e942c134e6c868036f924a23dac1..6072bba33e742d241e991e75b8258c715a227128 100644
--- a/components/gui/src/server.c
+++ b/components/gui/src/server.c
@@ -115,6 +115,7 @@ void rtgui_server_handle_mouse_btn(struct rtgui_event_mouse *event)
         return;
 
     event->wid = wnd->wid;
+    event->win_acti_cnt = rtgui_app_get_win_acti_cnt();
 
     /* only raise window if the button is pressed down */
     if (event->button & RTGUI_MOUSE_BUTTON_DOWN &&
@@ -124,9 +125,10 @@ void rtgui_server_handle_mouse_btn(struct rtgui_event_mouse *event)
     }
 
     /* send mouse event to thread */
-    rtgui_send(wnd->app,
-               (struct rtgui_event *)event,
-               sizeof(struct rtgui_event_mouse));
+    while (rtgui_send(wnd->app, (struct rtgui_event *)event, sizeof(struct rtgui_event_mouse)) != RT_EOK)
+    {
+        rt_thread_delay(RT_TICK_PER_SECOND / 50);
+    }
 }
 
 void rtgui_server_handle_mouse_motion(struct rtgui_event_mouse *event)
@@ -152,6 +154,8 @@ void rtgui_server_handle_mouse_motion(struct rtgui_event_mouse *event)
     if (win)
     {
         event->wid = win->wid;
+        event->win_acti_cnt = rtgui_app_get_win_acti_cnt();
+		
         rtgui_send(win->wid->app, &(event->parent), sizeof(*event));
     }
 
@@ -175,6 +179,7 @@ void rtgui_server_handle_kbd(struct rtgui_event_kbd *event)
 
         /* send to focus window */
         event->wid = wnd->wid;
+        event->win_acti_cnt = rtgui_app_get_win_acti_cnt();
 
         /* send keyboard event to thread */
         rtgui_send(wnd->app, (struct rtgui_event *)event, sizeof(struct rtgui_event_kbd));