[DUG] Help in getting file age

[Vikas...]

thanks it served my purpose

Have a good day
Cheers
Vik

On Fri, May 1, 2009 at 1:15 PM, Jianming Lin (FMI) <jianmingl at fmi.co.nz>wrote:

>  Sorry, guys, made mistake.
>
>
>
> If a file is saved in FAT32, file time is recorded as local time.
>
>
>
> Win32 API function FindFirstFile will automatically test that if a file is
> in FAT32 system, it will convert the local time to UTC time, and put it in
> the variable of
>
> TWin32FindData. ftLastWriteTime.
>
>
>
> We don’t need to call
>
>    LocalFileTimeToFileTime(LocalFileTime, UTC_FTime); //convert to UTC time
>
> As in
>
> function FAT_GetFileUTC_Time(const FileName: string; var FileUTC_Time:
> TSystemTime): boolean;
>
>
>
>
>
> You can see that if a file is saved in FAT32 media, say at 3:00pm 25/09/09.
>
> After day light saving time started for example on 01/11/09,
>
> Use function GetFileUTC_Time will return 2:00am 25/09/09.
>
>
>
> Use the following method will return 3:00am 25/09/09 which is correct.
>
>
>
>
> //---------------------------------------------------------------------------------------
>
> function GetFileUTC_Time(FileName:string; var FileRaw_Time: Integer):
> boolean;
>
> var fHdl: integer;
>
>     fInfo: TByHandleFileInformation;
>
> begin
>
>   result := false;
>
>   fHdl := fileopen(FileName, fmOpenRead );
>
>   try
>
>     if GetFileInformationByHandle(fHdl, fInfo) then
> //FileTimeToSystemTime(fInfo.ftLastWriteTime, FileRaw_Time);
>
>       result := FileTimeToDosDateTime(fInfo.ftLastWriteTime,
> LongRec(FileRaw_Time).Hi, LongRec(FileRaw_Time).Lo);
>
>   finally
>
>     fileClose(fHdl);
>
>   end;
>
> end;
>
>
>
>
>
>
>  ------------------------------
>
> *From:* delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
> *On Behalf Of *Vikas...
> *Sent:* Friday, 1 May 2009 2:07 a.m.
> *To:* NZ Borland Developers Group - Delphi List
> *Subject:* [DUG] Help in getting file age
>
>
>
> Dear Everyone,
>
>
> I need a help in calculating the age of file.
>
> I have checked the function file age. But it dint serve the purpose.
>
> Reason being is. Let say i am sitting in India changed a file on 30th April
> at 7:15pm. But on the other hand some one from america modifies the same
> files at 9:30am on 30th April since we have time difference of 12 hours from
> US. So how do i make sure this file modified at 9:30am is the new one.
>
> Since according the file age filed modified at 7:15pm that is later one is
> new. Which is not right.
>
> Anyone ever worked on such things before.
>
> I hope my query makes sense.
>
> Cheers
> Vik
>
>
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-- 
 vikas
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