# include<time.h>

# define WM_CLOCK USER+20

# define WM_CLOCK_INTERVAL 1000

struct tm *newdate;

time_t long_date;

TCHAR szTimerTitle[MAXSTRING];

//<time.h>

#if     _MSC_VER > 1000

#pragma once

#endif

#ifndef _INC_TIME

#define _INC_TIME

#if     !defined(_WIN32) && !defined(_MAC)

#error ERROR: Only Mac or Win32 targets supported!

#endif

#ifdef  _MSC_VER

/*

 * Currently, all MS C compilers for Win32 platforms default to 8 byte

 * alignment.

 */

#pragma pack(push,8)

#endif  /* _MSC_VER */

#ifdef  __cplusplus

extern "C" {

#endif

/* Define _CRTIMP */

#ifndef _CRTIMP

#ifdef  _DLL

#define _CRTIMP __declspec(dllimport)

#else   /* ndef _DLL */

#define _CRTIMP

#endif  /* _DLL */

#endif  /* _CRTIMP */

/* Define __cdecl for non-Microsoft compilers */

#if     ( !defined(_MSC_VER) && !defined(__cdecl) )

#define __cdecl

#endif

/* Define _CRTAPI1 (for compatibility with the NT SDK) */

#ifndef _CRTAPI1

#if    _MSC_VER >= 800 && _M_IX86 >= 300

#define _CRTAPI1 __cdecl

#else

#define _CRTAPI1

#endif

#endif

#ifndef _MAC

#ifndef _WCHAR_T_DEFINED

typedef unsigned short wchar_t;

#define _WCHAR_T_DEFINED

#endif

#endif  /* ndef _MAC */

/* Define the implementation defined time type */

#ifndef _TIME_T_DEFINED

typedef long time_t;        /* time value */

#define _TIME_T_DEFINED     /* avoid multiple def's of time_t */

#endif

#ifndef _CLOCK_T_DEFINED

typedef long clock_t;

#define _CLOCK_T_DEFINED

#endif

#ifndef _SIZE_T_DEFINED

typedef unsigned int size_t;

#define _SIZE_T_DEFINED

#endif

/* Define NULL pointer value */

#ifndef NULL

#ifdef __cplusplus

#define NULL    0

#else

#define NULL    ((void *)0)

#endif

#endif

#ifndef _TM_DEFINED

struct tm {

        int tm_sec;     /* seconds after the minute - [0,59] */

        int tm_min;     /* minutes after the hour - [0,59] */

        int tm_hour;    /* hours since midnight - [0,23] */

        int tm_mday;    /* day of the month - [1,31] */

        int tm_mon;     /* months since January - [0,11] */

        int tm_year;    /* years since 1900 */

        int tm_wday;    /* days since Sunday - [0,6] */

        int tm_yday;    /* days since January 1 - [0,365] */

        int tm_isdst;   /* daylight savings time flag */

        };

#define _TM_DEFINED

#endif

/* Clock ticks macro - ANSI version */

#define CLOCKS_PER_SEC  1000

/* Extern declarations for the global variables used by the ctime family of

 * routines.

 */

/* non-zero if daylight savings time is used */

_CRTIMP extern int _daylight;

/* offset for Daylight Saving Time */

_CRTIMP extern long _dstbias;

/* difference in seconds between GMT and local time */

_CRTIMP extern long _timezone;

/* standard/daylight savings time zone names */

_CRTIMP extern char * _tzname[2];

/* Function prototypes */

_CRTIMP char * __cdecl asctime(const struct tm *);

_CRTIMP char * __cdecl ctime(const time_t *);

_CRTIMP clock_t __cdecl clock(void);

_CRTIMP double __cdecl difftime(time_t, time_t);

_CRTIMP struct tm * __cdecl gmtime(const time_t *);

_CRTIMP struct tm * __cdecl localtime(const time_t *);

_CRTIMP time_t __cdecl mktime(struct tm *);

_CRTIMP size_t __cdecl strftime(char *, size_t, const char *,

        const struct tm *);

_CRTIMP char * __cdecl _strdate(char *);

_CRTIMP char * __cdecl _strtime(char *);

_CRTIMP time_t __cdecl time(time_t *);

#ifdef  _POSIX_

_CRTIMP void __cdecl tzset(void);

#else

_CRTIMP void __cdecl _tzset(void);

#endif

/* --------- The following functions are OBSOLETE --------- */

/* The Win32 API GetLocalTime and SetLocalTime should be used instead. */

unsigned __cdecl _getsystime(struct tm *);

unsigned __cdecl _setsystime(struct tm *, unsigned);

/* --------- The preceding functions are OBSOLETE --------- */

#ifndef _SIZE_T_DEFINED

typedef unsigned int size_t;

#define _SIZE_T_DEFINED

#endif

#ifndef _MAC

#ifndef _WTIME_DEFINED

/* wide function prototypes, also declared in wchar.h */

_CRTIMP wchar_t * __cdecl _wasctime(const struct tm *);

_CRTIMP wchar_t * __cdecl _wctime(const time_t *);

_CRTIMP size_t __cdecl wcsftime(wchar_t *, size_t, const wchar_t *,

        const struct tm *);

_CRTIMP wchar_t * __cdecl _wstrdate(wchar_t *);

_CRTIMP wchar_t * __cdecl _wstrtime(wchar_t *);

#define _WTIME_DEFINED

#endif

#endif  /* ndef _MAC */

#if     !__STDC__ || defined(_POSIX_)

/* Non-ANSI names for compatibility */

#define CLK_TCK  CLOCKS_PER_SEC

_CRTIMP extern int daylight;

_CRTIMP extern long timezone;

_CRTIMP extern char * tzname[2];

_CRTIMP void __cdecl tzset(void);

#endif  /* __STDC__ */

#ifdef  __cplusplus

}

#endif

#ifdef  _MSC_VER

#pragma pack(pop)

#endif  /* _MSC_VER */

#endif  /* _INC_TIME */

DrawText(hdc, szTimerTitle, strlen(szTimerTitle), &rt, DT_CENTER);

case WM_TIMER:

            if(wParam == WM_TIMER_CLOCK)

            {

            time(&long_date);                   //获取时间

            newdate=localtime(&long_date);   //转化为本地时间

            memset(szTimerTitle,0,sizeof(szTimerTitle));

            strcpy(szTimerTitle,asctime(newdate));   //打印时间            

            UpdateWindow(hWnd);

            break;

            }