feat(ui): partially implement CSimpleTop dtor

src/event/Event.cpp

@@ -165,3 +165,7 @@ void EventRegisterEx(EVENTID id, EVENTHANDLERFUNC handler, void* param, float pr
         }
     }
 }
+
+void EventUnregisterEx(EVENTID id, EVENTHANDLERFUNC handler, void* param, uint32_t flags) {
+    // TODO
+}

src/event/Event.hpp

@@ -57,6 +57,8 @@ void EventRegister(EVENTID id, int32_t (*handler)(const void*, void*));
 
 void EventRegisterEx(EVENTID id, int32_t (*handler)(const void*, void*), void* param, float priority);
 
+void EventUnregisterEx(EVENTID id, EVENTHANDLERFUNC handler, void* param, uint32_t flags);
+
 void OsNetPump(uint32_t timeout);
 
 #endif