请高手帮忙（我的C-Free的conio.h头文件里少了很多功能啊）
我的C-Free的conio.h头文件里少了txetbackground()
window()
这些函数都没有啊，怎么办啊？
下面是我的CONIO.H文件
/*
* conio.h
* This file has no copyright assigned and is placed in the Public Domain.
* This file is a part of the mingw-runtime package.
* No warranty is given; refer to the file DISCLAIMER within the package.
*
* Low level console I/O functions. Pretty please try to use the ANSI
* standard ones if you are writing new code.
*
*/
#ifndef _CONIO_H_
#define _CONIO_H_
/* All the headers include this file. */
#include <_mingw.h>
#ifndef RC_INVOKED
#ifdef __cplusplus
extern "C" {
#endif
_CRTIMP char* __cdecl __MINGW_NOTHROW _cgets (char*);
_CRTIMP int __cdecl __MINGW_NOTHROW _cprintf (const char*, ...);
_CRTIMP int __cdecl __MINGW_NOTHROW _cputs (const char*);
_CRTIMP int __cdecl __MINGW_NOTHROW _cscanf (char*, ...);
_CRTIMP int __cdecl __MINGW_NOTHROW _getch (void);
_CRTIMP int __cdecl __MINGW_NOTHROW _getche (void);
_CRTIMP int __cdecl __MINGW_NOTHROW _kbhit (void);
_CRTIMP int __cdecl __MINGW_NOTHROW _putch (int);
_CRTIMP int __cdecl __MINGW_NOTHROW _ungetch (int);
#ifndef _NO_OLDNAMES
_CRTIMP int __cdecl __MINGW_NOTHROW getch (void);
_CRTIMP int __cdecl __MINGW_NOTHROW getche (void);
_CRTIMP int __cdecl __MINGW_NOTHROW kbhit (void);
_CRTIMP int __cdecl __MINGW_NOTHROW putch (int);
_CRTIMP int __cdecl __MINGW_NOTHROW ungetch (int);
#endif /* Not _NO_OLDNAMES */
#ifdef __cplusplus
}
#endif
#endif /* Not RC_INVOKED */
#endif /* Not _CONIO_H_ */
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