The GetFileTime function retrieves the date and time that a file was created, last accessed, and last modified. BOOL GetFileTime( HANDLE hFile, // identifies the file
LPFILETIME lpCreationTime, // address of creation time
LPFILETIME lpLastAccessTime, // address of last access time
LPFILETIME lpLastWriteTime // address of last write time
);
ParametershFileIdentifies the files for which to get dates and times. The file handle must have been created with GENERIC_READ access to the file. lpCreationTimePoints to a FILETIME structure to receive the date and time the file was created. This parameter can be NULL if the application does not require this information.lpLastAccessTimePoints to a FILETIME structure to receive the date and time the file was last accessed. The last access time includes the last time the file was written to, read from, or, in the case of executable files, run. This parameter can be NULL if the application does not require this information. lpLastWriteTimePoints to a FILETIME structure to receive the date and time the file was last written to. This parameter can be NULL if the application does not require this information. Return ValuesIf the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError. ResThe FAT and New Technology file systems support the file creation, last access, and last write time values.
Windows 95: The precision of the time for a file in a FAT file system is 2 seconds. The time precision for files in other file systems, such as those connected through a network depends on the file system but may also be limited by the remote device.
LPFILETIME lpCreationTime, // address of creation time
LPFILETIME lpLastAccessTime, // address of last access time
LPFILETIME lpLastWriteTime // address of last write time
);
ParametershFileIdentifies the files for which to get dates and times. The file handle must have been created with GENERIC_READ access to the file. lpCreationTimePoints to a FILETIME structure to receive the date and time the file was created. This parameter can be NULL if the application does not require this information.lpLastAccessTimePoints to a FILETIME structure to receive the date and time the file was last accessed. The last access time includes the last time the file was written to, read from, or, in the case of executable files, run. This parameter can be NULL if the application does not require this information. lpLastWriteTimePoints to a FILETIME structure to receive the date and time the file was last written to. This parameter can be NULL if the application does not require this information. Return ValuesIf the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError. ResThe FAT and New Technology file systems support the file creation, last access, and last write time values.
Windows 95: The precision of the time for a file in a FAT file system is 2 seconds. The time precision for files in other file systems, such as those connected through a network depends on the file system but may also be limited by the remote device.
LPFILETIME a,b,c;
HANDLE handle; handle= CreateFile("c:\\1.TXT",
GENERIC_READ ,
NULL,//OF_SHARE_EXCLUSIVE,
NULL, //&security,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);kk=GetFileTime( handle,
NULL, // address of creation time
NULL, // address of last access time
NULL// address of last write time
);
CloseHandle(handle);
kk返回1
kk=GetFileTime( handle,
a, // address of creation time
NULL, // address of last access time
NULL// address of last write time
);
kk返回0,为什么？