2.1.8.10 FileTimeToSystemTime

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include
9 Reference

Description

Converts a 64-bit file time (in form of a FILETIME structure) to system time format.

Syntax

BOOL FileTimeToSystemTime( const FILETIME * lpFileTime, SYSTEMTIME * lpSystemTime )

Parameters

lpFileTime: [input] the pointer to the 64-bit file time (usually obtained from GetFileAttributesEx() function as one of the members of the WIN32_FILE_ATTRIBUTE_DATA structure).
lpSystemTime: [output] the pointer to the SYSTEMTIME structure which will receive the result. The members of SYSTEMTIME structure provide a human-readable form of date and time.

Return

nonzero for success, 0 for failure.

Examples

EX1

// The example displays system time of one file.
int FileTimeToSystemTime_ex1()
{
    string strFile = "c:\\myfile.txt";
 
    ///Create new file
    HANDLE hFile;
    hFile = CreateFile( strFile,
                        GENERIC_READ,
                        FILE_SHARE_READ,
                        NULL,
                        CREATE_ALWAYS,
                        FILE_ATTRIBUTE_NORMAL,
                        NULL);
    if (hFile == INVALID_HANDLE_VALUE) 
    { 
        out_str("Could not Create file.");   // process error
        return -1;
    } 
    CloseHandle(hFile);
    WIN32_FILE_ATTRIBUTE_DATA    fileInfo;
    // Get the attributes structure of the file
    if ( GetFileAttributesEx(strFile, 0, &fileInfo) )
    {
        SYSTEMTIME        stSystemTime;
        // Convert the last access time to SYSTEMTIME structure: 
        if ( FileTimeToSystemTime(&fileInfo.ftLastAccessTime, &stSystemTime) )
        {
            printf("Year = %d,  Month = %d,  Day = %d,  Hour = %d,  Minute = %d\n", stSystemTime.wYear, stSystemTime.wMonth, stSystemTime.wDay, stSystemTime.wHour, stSystemTime.wMinute);
        }
    }
    else
        out_str("Cannot get file attributes!");
    return 1;    
}