diff --git a/README.md b/README.md
index 8a52b02..bb75ee3 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,11 @@ NTAPI自动消失的消息框视频源代码，用于演示未公开的API
 int MessageBoxTimeoutA(IN HWND hWnd, IN LPCSTR lpText, IN LPCSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
 ```
 
+### 函数指针类型
+```c++
+typedef int(__stdcall* typeMSGBOXAAPI)(IN HWND hWnd, IN LPCSTR lpText, IN LPCSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
+```
+
 ### 所在DLL
  - user32.dll
 
@@ -20,6 +25,11 @@ int MessageBoxTimeoutA(IN HWND hWnd, IN LPCSTR lpText, IN LPCSTR lpCaption, IN U
 int MessageBoxTimeoutW(IN HWND hWnd, IN LPCWSTR lpText, IN LPCWSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
 ```
 
+### 函数指针类型
+```c++
+typedef int(__stdcall* typeMSGBOXWAPI)(IN HWND hWnd, IN LPCWSTR lpText, IN LPCWSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
+```
+
 ### 所在DLL
  - user32.dll