如何知道一个文件最近什么时候被写过

[acange]

如何知道一个文件最近什么时候被写过

比如我在c:\myfile.txt，我怎么知道他什么时候被写过。。。
谢谢了

[akiko]

CFileStatus cfs;
CFile::GetStatus("c:\\myfile.txt",cfs);
CString str=cfs.m_mtime.Format("%Y年%B月%d日%H点%M分%S秒");
AfxMessageBox(str);

[zhouyong0371]

WIN32_FIND_DATA FindFileData;

FindClose(FindFirstFile(lpFileName,&FindFileData));

其中：

typedef struct _WIN32_FIND_DATA {
DWORD dwFileAttributes;
FILETIME ftCreationTime;
FILETIME ftLastAccessTime;
FILETIME ftLastWriteTime; //看到了吧？
DWORD nFileSizeHigh;
DWORD nFileSizeLow;
DWORD dwReserved0;
DWORD dwReserved1;
TCHAR cFileName[ MAX_PATH ];
TCHAR cAlternateFileName[ 14 ];
} WIN32_FIND_DATA, *PWIN32_FIND_DATA;

[zhouyong0371]

你的lpFileName只要等于："C:\\myfile.txt"就可以了

[skyxie]

如果不用API，


直接用
CFileStatus status;
//status.m_mtime;//CTime,最近修改时间
//status.m_ctime;//CTime,创建时间
//status.m_atime;//CTime,最近访问时间
//status.m_attribute;//BYTE,属性；==0x01,只读；==0x02,隐藏;==0x04，系统;==0x20，存档

if( CFile::GetStatus("c:\\myfile.txt",status) )
{
CTime tm = status.m_mtime;//这样就得到了文件的最近修改时间
}

[oopig]

1.API:
BOOL GetFileTime(
HANDLE hFile,
LPFILETIME lpCreationTime,
LPFILETIME lpLastAccessTime,
LPFILETIME lpLastWriteTime
);
2.sample:
// GetLastWriteTime - retrieves the last-write time and converts the
// time to a string
// Return value - TRUE if successful, FALSE otherwise
// hFile - must be a valid file handle
// lpszString - pointer to buffer to receive string

BOOL GetLastWriteTime(HANDLE hFile, LPSTR lpszString)
{
FILETIME ftCreate, ftAccess, ftWrite;
SYSTEMTIME stUTC, stLocal;

// Retrieve the file times for the file.
if (!GetFileTime(hFile, &ftCreate, &ftAccess, &ftWrite))
return FALSE;

// Convert the last-write time to local time.
FileTimeToSystemTime(&ftWrite, &stUTC);
SystemTimeToTzSpecificLocalTime(NULL, &stUTC, &stLocal);

// Build a string showing the date and time.
wsprintf(lpszString, "%02d/%02d/%d %02d:%02d",
stLocal.wDay, stLocal.wMonth, stLocal.wYear,
stLocal.wHour, stLocal.wMinute);

return TRUE;
}