diff --git a/src/timer.rs b/src/timer.rs
index d25cd34..1ace3fe 100644
--- a/src/timer.rs
+++ b/src/timer.rs
@@ -11,11 +11,18 @@ const TVR_MASK: usize = TVR_SIZE - 1;
 
 pub type TimerAttacherRp = Rc::<RefCell::<TimerAttacher>>;
 pub type TimerWp = Weak::<Rc::<RefCell::<TimerList>>>;
-pub type TimerCb = Box::<dyn FnMut (i32, Option<Vec<Rc::<dyn Any>>>)>;
+pub type TimerCb = Box::<dyn FnMut (TimerEvent, Option<Vec<Rc::<dyn Any>>>)>;
 type TimerListListHeadRp = Rc::<RefCell::<crate::ListHead<TimerList>>>;
 type TimerListRp = Rc::<RefCell::<TimerList>>;
 type TimerListWp = Weak::<RefCell::<TimerList>>;
 
+pub enum TimerEvent {
+    Exec,
+    Delete,
+    Destory,
+    Custom(i32)
+}
+
 pub struct TimerAttacher {
     timers: TimerListListHeadRp,
 }
@@ -90,7 +97,7 @@ impl Timer {
         self.timer_tick = (self.get_tick_count)();
         let self_wp = self.shared_from_self();
         let cb = Box::new(
-            move |_event: i32, _args: Option<Vec<Rc::<dyn Any>>>| {
+            move |_event: TimerEvent, _args: Option<Vec<Rc::<dyn Any>>>| {
                 self_wp.borrow_mut().gc_timer(_event, _args);
             }
         );
@@ -165,7 +172,7 @@ impl Timer {
                 let timer = &self.work_list.borrow().first_entry();
                 self.running_timer = timer.clone();
                 match &timer.upgrade().unwrap().borrow_mut().cb {
-                    Some(v) => {
+                    Some(_v) => {
                         //(*v)(0, None);
                     }
                     None => {
@@ -271,8 +278,18 @@ impl Timer {
         return 0;
     }
 
-    fn gc_timer(&mut self, _e: i32, _args: Option<Vec<Rc::<dyn Any>>>) {
+    fn gc_timer(&mut self, e: TimerEvent, _args: Option<Vec<Rc::<dyn Any>>>) {
+        match e {
+            TimerEvent::Exec => {
 
+            }
+            TimerEvent::Custom(_v) => {
+
+            }
+            _ => {
+
+            }
+        }
     }
 
 }