Convert my 64 bit Windows time stamp

tootypegs · #1 01-Jul-2008, 11:07

hi I am trying to convert my 64 bit windows time stamp so that the date and time can be viewed by the user. I have the following code but it gives me a jumbled up date, not the one i was expecting, can anyone see a reason for this?

CPP / C++ / C Code:



char createdTime[] = {_ct1,_ct2,_ct3,_ct4,_ct5,_ct6,_ct7,_ct8};

 
     SYSTEMTIME stime ;
     FILETIME filetime;

     memcpy(&filetime, createdTime, sizeof(FILETIME));

     
     FileTimeToSystemTime( &filetime, &stime );  // convert to structure



    cout<< "This is the created date ";
cout << stime.wMonth << "/" << stime.wDay << "/ " << stime.wYear << "     Time:"  <<           stime.wHour<<":"<< stime.wMinute << ":"<<stime.wSecond  

<<"\n";

thankyou

davekw7x · #2 01-Jul-2008, 13:03

Quote:

Originally Posted by tootypegs

t gives me a jumbled up date, not the one i was expecting,

I hate to ask silly questions, but:

1. What, exactly were you expecting (and what exactly did you get)?
2. What are the contents of your "createdTime" array?
3. Did you get the values for createtTIme from GetFileTime() or what? (And if you got values from GetFileTime(), why did you copy them into an array of chars?)

Try the following command-line program:

CPP / C++ / C Code:

//
//testfiletime.cpp
//
#include <iostream>
#include <iomanip>
#include <windows.h>

using namespace std;

int main(int argc, char **argv)
{
    unsigned char createdTime[8];

    FILETIME ftCreate, ftAccess, ftWrite;
    SYSTEMTIME stime ;

    if (argc < 2) {
        cout << "Must enter the file name." << endl;
        return 0;
    }
    LPCSTR pszFile = argv[1];
    HANDLE hFile = CreateFile(pszFile, 
                   GENERIC_READ, 
                   (DWORD) 0, 
                   (LPSECURITY_ATTRIBUTES) NULL, 
                   OPEN_EXISTING, 
                   FILE_ATTRIBUTE_NORMAL, 
                   (HANDLE) NULL); 
    if (hFile == INVALID_HANDLE_VALUE) { 
        cout << "Could not open file " << pszFile
             << " for reading (error " << GetLastError() << ")." << endl;
        return 0;
    }
    cout << "Opened file " << pszFile << " for reading." << endl;

    if (!GetFileTime(hFile, &ftCreate, &ftAccess, &ftWrite)) {
        cout << "GetFileTime failed (error " << GetLastError() << ")." << endl;
        return 0;
    }
    FileTimeToSystemTime( &ftCreate, &stime );  // convert to structure
    cout << setfill('0');
    cout << "This is the Create date: "
         << setw(2) << stime.wMonth << "/" 
         << setw(2) << stime.wDay << "/" 
         << stime.wYear << "     Time:"  
         << stime.wHour <<":" 
         << stime.wMinute << ":"
         <<stime.wSecond 
         << endl;

    FileTimeToSystemTime( &ftAccess, &stime );  // convert to structure
    cout << "This is the Access date: "
         << setw(2) << stime.wMonth << "/" 
         << setw(2) << stime.wDay << "/" 
         << stime.wYear << "     Time:"  
         << setw(2) << stime.wHour <<":" 
         << setw(2) << stime.wMinute << ":"
         << setw(2) << stime.wSecond 
         << endl;

    FileTimeToSystemTime( &ftWrite, &stime );  // convert to structure
    cout << "This is the Write  date: "
         << setw(2) << stime.wMonth << "/" 
         << setw(2) << stime.wDay << "/" 
         << stime.wYear << "     Time:"  
         << setw(2) << stime.wHour <<":" 
         << setw(2) << stime.wMinute << ":"
         << setw(2) << stime.wSecond 
         << endl;

    memcpy(createdTime, &stime, 8);

    cout << endl;
    cout << "The bytes of createdTime as they are stored in memory:" << endl;
    cout << hex;
    for (int i = 0; i < 8; i++) {
        cout << "  0x" << setw(2) << unsigned(createdTime[i]);
    }
    cout << endl;
    return 0;
}

Output on my Windows XP system with a particular file in a particular directory:

Code:

F:\cprogs\test>testfiletime /home/dave/ae.txt
Opened file /home/dave/ae.txt for reading.
This is the Create date: 10/28/2006     Time:19:29:59
This is the Access date: 06/14/2007     Time:23:24:11
This is the Write  date: 10/28/2006     Time:19:29:59

The bytes of createdTime as they are stored in memory:
  0xd6  0x07  0x0a  0x00  0x06  0x00  0x1c  0x00

Regards,

Dave

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Convert my 64 bit Windows time stamp

Re: Convert my 64 bit Windows time stamp