Windows apps
Collapse the table of content
Expand the table of content
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

Changing a File Time to the Current Time

The following example sets the last-write time for a file to the current system time using the SetFileTime function.

The NTFS file system stores time values in UTC format, so they are not affected by changes in time zone or daylight saving time. The FAT file system stores time values based on the local time of the computer.

The file must be opened with the CreateFile function using FILE_WRITE_ATTRIBUTES access.

#include <windows.h>

// SetFileToCurrentTime - sets last write time to current system time
// Return value - TRUE if successful, FALSE otherwise
// hFile  - must be a valid file handle

BOOL SetFileToCurrentTime(HANDLE hFile)
    FILETIME ft;
    BOOL f;

    GetSystemTime(&st);              // Gets the current system time
    SystemTimeToFileTime(&st, &ft);  // Converts the current system time to file time format
    f = SetFileTime(hFile,           // Sets last-write time of the file 
        (LPFILETIME) NULL,           // to the converted current system time 

    return f;



© 2016 Microsoft