diff --git a/src/event/Input.cpp b/src/event/Input.cpp
index 8a25fca..0eb76f7 100644
--- a/src/event/Input.cpp
+++ b/src/event/Input.cpp
@@ -54,6 +54,8 @@ uint32_t Input::s_metaKeyState;
 int32_t Input::s_queueHead;
 int32_t Input::s_queueTail;
 int32_t Input::s_windowFocused;
+int (*s_confirmCloseCallback)(void*);
+void* s_confirmCloseParam;
 
 #if defined(WHOA_SYSTEM_WIN)
     int32_t Input::s_savedMouseSpeed;
@@ -360,6 +362,10 @@ void ConvertPosition(int32_t clientx, int32_t clienty, float* x, float* y) {
     *y = 1.0 - (static_cast<float>(clienty) / static_cast<float>(windowDim.bottom - windowDim.top));
 }
 
+void EventSetConfirmCloseCallback(int32_t (*callback)(void*), void* param) {
+    IEvtInputSetConfirmCloseCallback(callback, param);
+}
+
 void EventSetMouseMode(MOUSEMODE mode, uint32_t holdButton) {
     STORM_ASSERT(mode < MOUSE_MODES);
     STORM_VALIDATE(mode < MOUSE_MODES, ERROR_INVALID_PARAMETER);
@@ -483,6 +489,11 @@ int32_t IEvtInputProcess(EvtContext* context, int32_t* shutdown) {
     return v4;
 }
 
+void IEvtInputSetConfirmCloseCallback(int32_t (*callback)(void*),void* param) {
+    s_confirmCloseCallback = callback;
+    s_confirmCloseParam = param;
+}
+
 void IEvtInputSetMouseMode(EvtContext* context, MOUSEMODE mode, uint32_t holdButton) {
     STORM_ASSERT(context);
     STORM_VALIDATE(context, ERROR_INVALID_PARAMETER);
diff --git a/src/event/Input.hpp b/src/event/Input.hpp
index b899d39..38a432b 100644
--- a/src/event/Input.hpp
+++ b/src/event/Input.hpp
@@ -40,6 +40,8 @@ MOUSEBUTTON ConvertButtonNumberToMOUSEBUTTON(int32_t buttonNumber);
 
 void ConvertPosition(int32_t clientx, int32_t clienty, float* x, float* y);
 
+void EventSetConfirmCloseCallback(int32_t (*callback)(void*), void* param);
+
 void EventSetMouseMode(MOUSEMODE mode, uint32_t holdButton);
 
 uint32_t GenerateMouseFlags();
@@ -50,6 +52,8 @@ void IEvtInputInitialize();
 
 int32_t IEvtInputProcess(EvtContext* context, int32_t* shutdown);
 
+void IEvtInputSetConfirmCloseCallback(int32_t (*callback)(void*),void* param);
+
 void IEvtInputSetMouseMode(EvtContext* context, MOUSEMODE mode, uint32_t holdButton);
 
 const char* KeyCodeToString(KEY key);