1 2 3 extern int msvcrt_error_mode; 4 extern int __app_type; 5 #define _UNKNOWN_APP 0 6 #define _CONSOLE_APP 1 7 #define _GUI_APP 2 8 9 int 10 __cdecl 11 __crt_MessageBoxA ( 12 _In_opt_ const char *pszText, 13 _In_ unsigned int uType); 14 15