Overview
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Quick Info

Windows NT
Yes
Win95
Yes
Win32s
Yes
Import Library
kernel32.lib
Header File
winbase.h
Unicode
No
Platform Notes
None

FileTimeToDosDateTime

The FileTimeToDosDateTime function converts a 64-bit file time to MS-DOS date and time values.

BOOL FileTimeToDosDateTime(

CONST FILETIME *lpFileTime,
// pointer to 64-bit file time
LPWORD lpFatDate,
// pointer to variable for MS-DOS date
LPWORD lpFatTime
// pointer to variable for MS-DOS time
);

Parameters

lpFileTime

Points to a FILETIME structure containing the 64-bit file time to convert to MS-DOS date and time format. The FILETIME structure has the following form:

typedef struct _FILETIME { // ft

DWORD dwLowDateTime;

DWORD dwHighDateTime;

} FILETIME;

lpFatDate

Points to a variable to receive the MS-DOS date. The date is a packed 16-bit value with the following format:

Bits
Contents
0pics/WIN3200090000.gif4
Day of the month (1pics/WIN3200090000.gif31)
5pics/WIN3200090000.gif8
Month (1 = January, 2 = February, etc.)
9pics/WIN3200090000.gif15
Year offset from 1980 (add 1980 to get actual year)

lpFatTime

Points to a variable to receive the MS-DOS time. The time is a packed 16-bit value with the following format:

Bits
Contents
0pics/WIN3200090000.gif4
Second divided by 2
5pics/WIN3200090000.gif10
Minute (0pics/WIN3200090000.gif59)
11pics/WIN3200090000.gif15
Hour (0pics/WIN3200090000.gif23 on a 24-hour clock)

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The MS-DOS date format can represent only dates between 1/1/1980 and 12/31/2107; this conversion fails if the input file time is outside this range.

See Also

DosDateTimeToFileTime
, FileTimeToSystemTime, SystemTimeToFileTime

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