diff --git a/example/layers/ui_layer/ui_layer.cpp b/example/layers/ui_layer/ui_layer.cpp
index c09fae5..67d90d2 100755
--- a/example/layers/ui_layer/ui_layer.cpp
+++ b/example/layers/ui_layer/ui_layer.cpp
@@ -27,8 +27,22 @@ namespace example
     VE_PUSH_FONT(REGULAR, 20);
     if (ImGui::Button("Test signal", ImVec2(128, 130))) 
       VE::EMIT(test_event::TEST_EVEN, std::string("test event message"));
+
+    // try
+    // {
+    //   if (ImGui::Button("Test signal log error", ImVec2(128, 130))) 
+    //     VE::EMIT(test_event::TEST_EVEN, std::string("test event message"));
+    // }
+    // catch(hack::exception& e)
+    // {
+    //   e.log();
+    //   auto data = std::any_cast<VE::event>(e.get_data());
+    //   hack::log()(data.m_id);
+    // }
+
     VE_POP_FONT();
 
+
     ImGui::End();
   }
 
diff --git a/src/event/event.hpp b/src/event/event.hpp
index 2f1aa70..5a98afc 100755
--- a/src/event/event.hpp
+++ b/src/event/event.hpp
@@ -13,11 +13,4 @@ namespace VE
     std::any m_data;
     int m_id;
   };
-
-  struct emitter
-  {
-    virtual ~emitter();
-    virtual void on_event(event e) = 0;
-    virtual void on_attach() = 0;
-  };
 }
diff --git a/src/event/event_manager.hpp b/src/event/event_manager.hpp
index d630752..dfbef21 100755
--- a/src/event/event_manager.hpp
+++ b/src/event/event_manager.hpp
@@ -4,6 +4,7 @@
 #include <hack/patterns/singleton.hpp>
 #include <hack/logger/logger.hpp>
 #include <hack/security/uuid.hpp>
+#include <hack/exception/exception.hpp>
 
 #include "event.hpp"
 
@@ -13,25 +14,24 @@ namespace VE
   {
     void emit(event e)
     {
+      std::size_t i = 0;
       try
       {
-        for(auto& f : m_funcs) f.func(e);
-      }
-      catch(const std::exception& ex)
-      {
-        hack::error()(ex.what());
-        hack::log()("size funcs", m_funcs.size());
+        for(;i < m_funcs.size();++i) m_funcs[i].m_func(e);
       }
       catch(...)
       {
-        hack::error()("ooops...");
+        hack::error()("call function is error...");
+        hack::exception ex;
+        ex.set_data(e);
+        throw ex;
       }
     }
 
     struct EventHandler 
     {
-      std::function<void(event)> func;
-      void* obj;
+      std::function<void(event)> m_func;
+      void* m_obj;
     };
 
     std::vector<EventHandler> m_funcs;
@@ -51,7 +51,7 @@ namespace VE
       m_funcs.erase(
         std::remove_if(m_funcs.begin(), m_funcs.end(),
           [obj](const auto& handler) {
-            return handler.obj == obj;
+            return handler.m_obj == obj;
           }),
         m_funcs.end()
       );