diff --git a/vscode/CMakeLists.txt b/vscode/CMakeLists.txt
index 7dbe98e..bdbcfa0 100644
--- a/vscode/CMakeLists.txt
+++ b/vscode/CMakeLists.txt
@@ -6,7 +6,7 @@ include_directories(${PROJECT_SOURCE_DIR}/FSM_OOP/baseFSM)
 aux_source_directory(${PROJECT_SOURCE_DIR}/FSM_OOP/baseFSM  SRC_FSM_OOP)
 
 
-set(keytest 789) 
+# set(keytest 789) 
 # set(child_parent 789) 
 if(DEFINED keytest)
     include_directories(${PROJECT_SOURCE_DIR}/FSM_OOP/keytest)
diff --git a/vscode/FSM_OOP/baseFSM/FSM.c b/vscode/FSM_OOP/baseFSM/FSM.c
index f5610fa..946b286 100644
--- a/vscode/FSM_OOP/baseFSM/FSM.c
+++ b/vscode/FSM_OOP/baseFSM/FSM.c
@@ -22,7 +22,7 @@ void resetBaseFSM(FSM *pFSM)
 
 static inline void setEvent(FSM* pFSM){
     assert(pFSM->vtbl.selectEvent);
-    pFSM->privateVars.curEvent = pFSM->vtbl.selectEvent(pFSM->data);
+    pFSM->privateVars.curEvent = pFSM->vtbl.selectEvent(pFSM->data, pFSM->signals);
 
     if(0 == pFSM->privateVars.numChild){
         return;
@@ -47,6 +47,7 @@ void stepBaseFSM(FSM *pFSM)
 {
     preload(pFSM);
     setEvent(pFSM);
+    pFSM->vtbl.resetSignals(pFSM);
 
     FSMHandler *fcns = &pFSM->privateVars.fcns;
     int curState = pFSM->privateVars.curState;
@@ -114,6 +115,7 @@ FSM*  newBaseFSM(int numState, int numEvent, int defaultState){
         .setupHandler = NULL,
         .initData = NULL,
         .initDataLoader = NULL,
+        .initSignals = NULL,
     };
 
     pFSM->vtbl = vtbl;
@@ -125,18 +127,18 @@ void constructFSM(FSM* pFSM){
     assert(pFSM->vtbl.setupHandler);
     assert(pFSM->vtbl.initData);
     assert(pFSM->vtbl.initDataLoader);
+    assert(pFSM->vtbl.initSignals);
 
     pFSM->vtbl.setupHandler(&pFSM->privateVars.fcns);
     pFSM->vtbl.initData(pFSM);
     pFSM->vtbl.initDataLoader(pFSM);
+    pFSM->vtbl.initSignals(pFSM);
 }
 
 
 /* 
     public 函数
  */
-
-
 int getFSMCurState(FSM *pFSM){
     return pFSM->privateVars.curState;
 }
@@ -156,18 +158,34 @@ void registerChildFSM(FSM *parent, FSM *child, int index){
     parent->privateVars.childFSM[index] = child;
 }
 
-const void *getData(FSM* pFSM){
+const void *_getData(FSM* pFSM){
     return (const void *)pFSM->data;
 }
 
+void *_getSignals(FSM* pFSM){
+    return pFSM->signals;
+}
+
+
 void *_preloadIn(FSM *pFSM){
     return pFSM->privateVars.preloader.in;
 }
 
 void _preloaderGetReady(FSM *pFSM){
+    if(pFSM->privateVars.preloader.isReady){
+        pFSM->privateVars.preloader.isOverflow = 1;
+    }
     pFSM->privateVars.preloader.isReady = 1;
 }
 
+int _getPreloaderOverFlag(FSM *pFSM){
+    return pFSM->privateVars.preloader.isOverflow;
+}
+
+void _clearPreloaderOverFlag(FSM *pFSM){
+    pFSM->privateVars.preloader.isOverflow = 0;
+}
+
 
 FSMVtbl *_vptrFSM(FSM* pFSM){
     return &pFSM->vtbl;
diff --git a/vscode/FSM_OOP/baseFSM/FSM_protected.h b/vscode/FSM_OOP/baseFSM/FSM_protected.h
index fc23698..565eca3 100644
--- a/vscode/FSM_OOP/baseFSM/FSM_protected.h
+++ b/vscode/FSM_OOP/baseFSM/FSM_protected.h
@@ -32,7 +32,7 @@ typedef void (*Avoid_WARNING_State_Fcns)(void *data, FSM **childFSM);
 typedef void (*Avoid_WARNING_Delay_Handlers)(void *data);
 typedef int (*Avoid_WARNING_Transition_Handler)(void *data, int curState, int *);
 typedef void (*Avoid_WARNING_Overrider_Fcns)(FSM *pFsm);
-typedef int (*Avoid_WARNING_SelectEvent)(void *data);
+typedef int (*Avoid_WARNING_SelectEvent)(void *data, void *signals);
 typedef void (*Avoid_WARNING_void_fcns)(FSMHandler *fcns);
 
                 
@@ -60,6 +60,7 @@ typedef struct _FSMDataLoader
 {   
     void *in;
     int isReady;
+    int isOverflow;
     size_t preloadSize;
 }FSMDataLoader;
 
@@ -93,6 +94,7 @@ typedef struct _FSM
 
     // protected
     void *data;
+    void *signals;
 } FSM;
 
 
diff --git a/vscode/FSM_OOP/baseFSM/FSM_public.h b/vscode/FSM_OOP/baseFSM/FSM_public.h
index 8f4cc6a..a394855 100644
--- a/vscode/FSM_OOP/baseFSM/FSM_public.h
+++ b/vscode/FSM_OOP/baseFSM/FSM_public.h
@@ -6,31 +6,42 @@
 
 typedef struct _FSM FSM;
 
-#define     Step(pFSM)                    _vptrFSM((FSM *)pFSM)->step((FSM *)pFSM)
-#define     PreloaderGetReady(pFSM)       _preloaderGetReady((FSM *)pFSM);
-             
+#define     Step(pFSM)                       _vptrFSM((FSM *)pFSM)->step((FSM *)pFSM)
+#define     PreloaderGetReady(pFSM)          _preloaderGetReady((FSM *)pFSM);
+#define     GetPreloaderOverFlag(pFSM)       _getPreloaderOverFlag((FSM *)pFSM)
+#define     ClearPreloaderOverFlag(pFSM)     _clearPreloaderOverFlag((FSM *)pFSM)
+#define     GetData(pFSM)                    _getData((FSM*)pFSM)
+
 
 typedef struct _FSMHandler FSMHandler;
 // 这几个函数可认为是虚函数, 构造函数里不会初始化FSMVtbl, 必须由子类重新实现
 typedef struct _FSMVtbl {
     // 状态机控制
-    int (*selectEvent)(void *data);    // 可以认为是纯虚函数, 子类必须重新实现
+    int (*selectEvent)(void *data, void *signals);    // 可以认为是纯虚函数, 子类必须重新实现
     void (*reset)(FSM *pFSM);   // 子类重新实现可以添加一些打印信息
     void (*step)(FSM *pFSM);    // 子类重新实现可以添加一些打印信息
     void (*initData)(FSM *pFSM);    // 子类必须重新实现
+    void (*initSignals)(FSM *pFSM);    // 子类必须重新实现
+    void (*resetSignals)(FSM *pFSM);    // 子类必须重新实现
     void (*setupHandler)(FSMHandler *fcns);    // 子类必须重新实现
     void (*initDataLoader)(FSM *pFSM);    // 子类必须重新实现
 }FSMVtbl;
 
-
+/* --------------------------------- 状态机信息获取 -------------------------------- */
 int getFSMCurState(FSM *pFSM);
 int getFSMCurEvent(FSM *pFSM);
 void setChildNum(FSM *pFSM, int num);
 void registerChildFSM(FSM *parent, FSM *child, int index);
 
-const void *getData(FSM* pFSM);
+/* ------------------------------ Data和Signals ------------------------------ */
+const void *_getData(FSM* pFSM);
+void *_getSignals(FSM* pFSM);
+
+/* ---------------------------------- 预装载器 ---------------------------------- */
 void *_preloadIn(FSM *pFSM);
 void _preloaderGetReady(FSM *pFSM);
+int _getPreloaderOverFlag(FSM *pFSM);
+void _clearPreloaderOverFlag(FSM *pFSM);
 
 FSMVtbl *_vptrFSM(FSM* pFSM);
 
diff --git a/vscode/FSM_OOP/childtest/main.c b/vscode/FSM_OOP/childtest/main.c
index 6b353d6..dc89bcb 100644
--- a/vscode/FSM_OOP/childtest/main.c
+++ b/vscode/FSM_OOP/childtest/main.c
@@ -23,7 +23,7 @@ int main(){
         ChildFSM_Input(cFSM)->arrindex = i;
         PreloaderGetReady(cFSM);
 
-        ChildFSMData* data = getData((FSM *)(cFSM));
+        ChildFSMData* data = _getData((FSM *)(cFSM));
         printf(" %d ", data->arrindex);
         
         
diff --git a/vscode/FSM_OOP/keytest/keyFSM.h b/vscode/FSM_OOP/keytest/keyFSM.h
index 78c0c12..620b002 100644
--- a/vscode/FSM_OOP/keytest/keyFSM.h
+++ b/vscode/FSM_OOP/keytest/keyFSM.h
@@ -29,8 +29,13 @@ const static char *keyStr[] =
 
 typedef struct _keyFSMData
 {
+    /* ----------------------------------- 输入 ----------------------------------- */
     KeyIn in;
+
+    /* ----------------------------------- 输出 ----------------------------------- */
     KeyOutSignal out;
+
+    /* ---------------------------------- 内部变量 ---------------------------------- */
     int countDelay;
     int countMultiDown;
 }KeyFSMData;
diff --git a/vscode/FSM_OOP/keytest/main.c b/vscode/FSM_OOP/keytest/main.c
index cc0fa24..07d4abf 100644
--- a/vscode/FSM_OOP/keytest/main.c
+++ b/vscode/FSM_OOP/keytest/main.c
@@ -26,10 +26,11 @@ int main(){
     for (int i = 0; i < NUM; i++)
     {
         printf("第%d次: ",i+1);
-        const KeyFSMData* data = getData((FSM *)keyFSM);
+        const KeyFSMData* data = _getData((FSM *)keyFSM);
 
         *KeyFSM_Input(keyFSM) = testin[i];
         PreloaderGetReady(keyFSM);
+        ClearPreloaderOverFlag(keyFSM);
         Step(keyFSM);
 
         if(data->out){
diff --git a/vscode/FSM_OOP/template/main.c b/vscode/FSM_OOP/template/main.c
index 4242bf1..f553d87 100644
--- a/vscode/FSM_OOP/template/main.c
+++ b/vscode/FSM_OOP/template/main.c
@@ -14,8 +14,19 @@ int main(){
     {   
         TemplateFSM_Input(pFSM)->arrindex = i;
         PreloaderGetReady(pFSM);
+
+        const TemplateFSMData* data = GetData(pFSM);
+
+        int ovflag = GetPreloaderOverFlag(pFSM);
         
-        printf("%d," ,i);
+        if(i == 10){
+            TemplateFSM_Signals(pFSM)->signalA = 1;
+        }
+        if(i == 11){
+            TemplateFSM_Signals(pFSM)->signalB = 1;
+        }
+
+        printf("%d, " ,i);
 
         Step(pFSM);
         printf("\n");
diff --git a/vscode/FSM_OOP/template/templateFSM.c b/vscode/FSM_OOP/template/templateFSM.c
index 310564f..43376d4 100644
--- a/vscode/FSM_OOP/template/templateFSM.c
+++ b/vscode/FSM_OOP/template/templateFSM.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "FSM_protected.h"
 #include "templateFSM.h"
@@ -21,9 +22,19 @@ static Event ceventArr[20] = {
     Idle_Event,
     Idle_Event,
     Idle_Event,
+    Idle_Event,
+    Idle_Event,
+    Idle_Event,
 };
 
-static Event selectEvent(TemplateFSMData *data){   // 必须重新实现
+static Event selectEvent(TemplateFSMData *data, TemplateFSMSignals *signals){   // 必须重新实现
+    if(signals->signalA){
+        return E2D;
+    }
+    if(signals->signalB){
+        return D2E;
+    }
+
     return ceventArr[data->in.arrindex];
 }
 
@@ -47,6 +58,23 @@ static void initData(TemplateFSM *pFSM){   // 必须重新实现
     pFSM->base.data = data;
 }
 
+
+static void initSignals(TemplateFSM *pFSM){
+    TemplateFSMSignals *signals = (TemplateFSMSignals *)malloc(sizeof(TemplateFSMSignals));
+    TemplateFSMSignals tempSignals = {
+        .signalA = 0,
+        .signalB = 0,
+    };
+    *signals = tempSignals;
+    pFSM->base.signals = signals;
+}
+
+static void resetSignals(TemplateFSM *pFSM){
+    memset(pFSM->base.signals, 0, sizeof(TemplateFSMSignals));
+}
+
+
+
 static void initDataLoader(TemplateFSM *pFSM){   // 必须重新实现
     pFSM->base.privateVars.preloader.in = malloc(sizeof(TemplateFSMIn));
     pFSM->base.privateVars.preloader.preloadSize = sizeof(TemplateFSMIn);
@@ -82,6 +110,8 @@ TemplateFSM *createTemplateFSM(){
     pFSM->base.vtbl.step = (Avoid_WARNING_Overrider_Fcns)step;
     pFSM->base.vtbl.initData = (Avoid_WARNING_Overrider_Fcns)initData;
     pFSM->base.vtbl.initDataLoader = (Avoid_WARNING_Overrider_Fcns)initDataLoader;
+    pFSM->base.vtbl.initSignals = (Avoid_WARNING_Overrider_Fcns)initSignals;
+    pFSM->base.vtbl.resetSignals = (Avoid_WARNING_Overrider_Fcns)resetSignals;
 
     pFSM->base.vtbl.selectEvent = (Avoid_WARNING_SelectEvent)selectEvent;
     pFSM->base.vtbl.setupHandler = (Avoid_WARNING_void_fcns)setupHandler;
diff --git a/vscode/FSM_OOP/template/templateFSM.h b/vscode/FSM_OOP/template/templateFSM.h
index 610a13f..a902b9f 100644
--- a/vscode/FSM_OOP/template/templateFSM.h
+++ b/vscode/FSM_OOP/template/templateFSM.h
@@ -2,8 +2,8 @@
 #define __TEMPLATE_FSM_H_
 
 
-#define     TemplateFSM_Input(pFSM)      ((TemplateFSMIn *)_preloadIn((FSM *)pFSM))
-
+#define     TemplateFSM_Input(pFSM)          ((TemplateFSMIn *)_preloadIn((FSM *)pFSM))
+#define     TemplateFSM_Signals(pFSM)        ((TemplateFSMSignals *)_getSignals((FSM *)pFSM))
 
 typedef struct _templateFSMIn
 {
@@ -11,6 +11,12 @@ typedef struct _templateFSMIn
     int x;
 }TemplateFSMIn;
 
+typedef struct _templateFSMSignals
+{
+    int signalA;
+    int signalB;
+}TemplateFSMSignals;
+
 typedef struct _templateFSMData
 {
     TemplateFSMIn in;
@@ -18,6 +24,8 @@ typedef struct _templateFSMData
     int inner1;
 }TemplateFSMData;
 
+
+
 typedef struct _TemplateFSM TemplateFSM;
 TemplateFSM *createTemplateFSM();
 
diff --git a/vscode/FSM_OOP/template/templateFSM_private.h b/vscode/FSM_OOP/template/templateFSM_private.h
index 240a866..af07c1c 100644
--- a/vscode/FSM_OOP/template/templateFSM_private.h
+++ b/vscode/FSM_OOP/template/templateFSM_private.h
@@ -117,8 +117,8 @@ const static char *eventStr[] = {
     "E2D",
 };
 static void printFSM(TemplateFSM* pFSM){
-    FSM_LOG(" \t\tTemplateFSM: ");
-    FSM_LOG("上次事件:%s, 当前状态:%s, 动作：", eventStr[getFSMCurEvent((FSM *)pFSM)], stateStr[getFSMCurState((FSM *)pFSM)]);
+    FSM_LOG(" \tTemplateFSM: ");
+    FSM_LOG("上次事件:%s, 当前状态:%s, 预装载器溢出:%d ,动作：", eventStr[getFSMCurEvent((FSM *)pFSM)], stateStr[getFSMCurState((FSM *)pFSM)], _getPreloaderOverFlag((FSM *)pFSM));
 }
 
 
diff --git a/按键状态图2.png b/按键状态图2.png
new file mode 100644
index 0000000..14ff1ce
Binary files /dev/null and b/按键状态图2.png differ