1. 验证异常处理调用顺序：VEH –> SEH –> VCH

   #include "stdafx.h"
   #include <windows.h>
   
   LONG WINAPI vch(EXCEPTION_POINTERS* pExcept)
   {
       printf("vch\n");
       return EXCEPTION_CONTINUE_SERCH;
   }
   
   LONG WINAPI veh(EXCEPTION_POINTERS* pExcept)
   {
       printf("veh\n");
       return EXCEPTION_CONTINUE_SEARCH;
   }
   
   LONG WINAPI seh(EXCEPTION_POINTERS* pExcept)
   {
       printf("seh\n");
       return EXCEPTION_CONTINUE_SEARCH;
   }
   
   LONG WINAPI ueh(EXCEPTION_POINTERS* pExcept)
   {
       printf("ueh\n");
       return EXCEPTION_CONTINUE_SEARCH;
   }
   
   int _tmain(int argc, _TCHAR* argv[])
   {
       AddVectoredContinueHandler(TRUE, vch);
       AddVectoreExceptionHandler(TRUE, veh);
       //在64位系统系下，当程序被调用时，UEH不会被调用，不被调试才会被调用
       //在32位系统下，被调试时也会被调用
       SetUnhandledExceptionFilter(ueh);
       __try{
           *(int*)0=0;
       }
       __except(seh(GetExceptionInformation())){
       }
       return 0;
   }