diff --git a/components/drivers/usb/usbhost/class/umouse.c b/components/drivers/usb/usbhost/class/umouse.c
index b1820da0f36ed2cb10a96e6c62c6599e2a9e553a..0fb529f598a73f545f3a1fc64f43ae84e82d3d6d 100644
--- a/components/drivers/usb/usbhost/class/umouse.c
+++ b/components/drivers/usb/usbhost/class/umouse.c
@@ -15,19 +15,22 @@
 #include <rtthread.h>
 #include <drivers/usb_host.h>
 #include "hid.h"
+
 #ifdef RT_USING_RTGUI
 #include <rtgui/event.h>
 #include <rtgui/rtgui_server.h>
 #include "drv_lcd.h"
 #endif
+
 #if defined(RT_USBH_HID) && defined(RT_USBH_HID_MOUSE)
-static struct uprotocal mouse_protocal; 
+static struct uprotocal mouse_protocal;
 
 #ifdef RT_USING_RTGUI
 #define LKEY_PRESS 0x01
 #define RKEY_PRESS 0x02
 #define MKEY_PRESS 0x04
 #define MOUSE_SCALING 0x02
+
 static rt_bool_t lkey_down=RT_FALSE;
 //static rt_bool_t rkey_down=RT_FALSE;
 //static rt_bool_t mkey_down=RT_FALSE;
@@ -36,86 +39,94 @@ static struct rtgui_event_mouse emouse;
 
 static rt_err_t rt_usbh_hid_mouse_callback(void* arg)
 {
-    struct uhid* hid; 
+    struct uhid* hid;
 #ifdef RT_USING_RTGUI
-	  rt_uint16_t xoffset=0;
-	  rt_uint16_t yoffset=0;
+    rt_uint16_t xoffset=0;
+    rt_uint16_t yoffset=0;
 #endif
     hid = (struct uhid*)arg;
 
-    RT_DEBUG_LOG(RT_DEBUG_USB, ("hid 0x%x 0x%x\n", 
-        *(rt_uint32_t*)hid->buffer, 
-        *(rt_uint32_t*)(&hid->buffer[4])));     
-#ifdef RT_USING_RTGUI	
-     if(hid->buffer[1]!=0)
-			 {  
-				 if(hid->buffer[1]>127)
-					 {
-						 xoffset=(256-hid->buffer[1])*MOUSE_SCALING;
-              if(emouse.x>xoffset)
-							 {
+    RT_DEBUG_LOG(RT_DEBUG_USB, ("hid 0x%x 0x%x\n",
+                                *(rt_uint32_t*)hid->buffer,
+                                *(rt_uint32_t*)(&hid->buffer[4])));
+#ifdef RT_USING_RTGUI
+    if(hid->buffer[1]!=0)
+    {
+        if(hid->buffer[1]>127)
+        {
+            xoffset=(256-hid->buffer[1])*MOUSE_SCALING;
+            if(emouse.x>xoffset)
+            {
                 emouse.x-=xoffset;
-               }else
-							 {
+            }
+            else
+            {
                 emouse.x=0;
-               }
-           }else
-					 {
-						 xoffset=(hid->buffer[1])*MOUSE_SCALING;
-             if((emouse.x+xoffset)<480)
-							 {
+            }
+        }
+        else
+        {
+            xoffset=(hid->buffer[1])*MOUSE_SCALING;
+            if((emouse.x+xoffset)<480)
+            {
                 emouse.x+=xoffset;
-               }else
-							 {
+            }
+            else
+            {
                 emouse.x=480;
-               }
-         }
-       }
-		 if(hid->buffer[2]!=0)
-			 {
-				
-     	 if(hid->buffer[2]>127)
-					 {
-						 yoffset=(256-hid->buffer[2])*MOUSE_SCALING;
-              if(emouse.y>yoffset)
-							 {
+            }
+        }
+    }
+    if(hid->buffer[2]!=0)
+    {
+
+        if(hid->buffer[2]>127)
+        {
+            yoffset=(256-hid->buffer[2])*MOUSE_SCALING;
+            if(emouse.y>yoffset)
+            {
                 emouse.y-=yoffset;
-               }else
-							 {
+            }
+            else
+            {
                 emouse.y=0;
-               }
-           }else
-					 {
-						 yoffset=hid->buffer[2]*MOUSE_SCALING;
-             if(emouse.y+yoffset<272)
-							 {
+            }
+        }
+        else
+        {
+            yoffset=hid->buffer[2]*MOUSE_SCALING;
+            if(emouse.y+yoffset<272)
+            {
                 emouse.y+=yoffset;
-               }else
-							 {
+            }
+            else
+            {
                 emouse.y=272;
-               }
-         }			
-       }
-		if(xoffset!=0||yoffset!=0)
-			{
+            }
+        }
+    }
+    if(xoffset!=0||yoffset!=0)
+    {
         cursor_set_position(emouse.x,emouse.y);
-      }
+    }
     if(hid->buffer[0]&LKEY_PRESS)
-			{
-			 if(lkey_down==RT_FALSE){
-      // rt_kprintf("mouse left key press down\n");
-				 emouse.button = (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN);
-				 rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
-				lkey_down=RT_TRUE;
-			 }
-      }else if(lkey_down==RT_TRUE)
-			{
-       // rt_kprintf("mouse left key press up\n");
-				emouse.button = (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_UP);
-				rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
-				lkey_down=RT_FALSE;
-      }
-#endif		
+    {
+        if(lkey_down==RT_FALSE)
+        {
+            // rt_kprintf("mouse left key press down\n");
+            emouse.button = (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN);
+            rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
+            lkey_down=RT_TRUE;
+        }
+    }
+    else if(lkey_down==RT_TRUE)
+    {
+        // rt_kprintf("mouse left key press up\n");
+        emouse.button = (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_UP);
+        rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
+        lkey_down=RT_FALSE;
+    }
+#endif
     return RT_EOK;
 }
 
@@ -123,24 +134,24 @@ static rt_err_t rt_usbh_hid_mouse_init(void* arg)
 {
     struct uintf* intf = (struct uintf*)arg;
 
-    RT_ASSERT(intf != RT_NULL);        
-    
+    RT_ASSERT(intf != RT_NULL);
+
     rt_usbh_hid_set_protocal(intf, 0);
 
     rt_usbh_hid_set_idle(intf, 10, 0);
 
-    RT_DEBUG_LOG(RT_DEBUG_USB, ("start usb mouse\n"));    
-#ifdef RT_USING_RTGUI 
-	  RTGUI_EVENT_MOUSE_BUTTON_INIT(&emouse);
+    RT_DEBUG_LOG(RT_DEBUG_USB, ("start usb mouse\n"));
+#ifdef RT_USING_RTGUI
+    RTGUI_EVENT_MOUSE_BUTTON_INIT(&emouse);
     emouse.wid = RT_NULL;
-	  cursor_display(RT_TRUE);
-#endif	
+    cursor_display(RT_TRUE);
+#endif
     return RT_EOK;
 }
 
 /**
  * This function will define the hid mouse protocal, it will be register to the protocal list.
- * 
+ *
  * @return the keyboard protocal structure.
  */
 uprotocal_t rt_usbh_hid_protocal_mouse(void)