Gabriel, check out VclZip : http://vclzip.bizland.com/kpgbpro.htm
certainly meets your first three requirements, and you can stream files 
in and out, similar to what Rob suggested.

[EMAIL PROTECTED] wrote:
> Hi.
>
> I want to save a form with all data inserted by user (in multiple boxes 
> and grids).
> For this, I have added to all controls a procedure 
> SaveToFile/LoadFromFile (like in TStringList.SaveToFile).
> All is working nice with one single exception: I have too many files 
> instead of a single one and the user will be confused.
>
> My idea was to compress all those files in a single ZIP/RAR in the fly 
> or at least to compact them (like TAR).
>
> I searched on the internet and I have found few compressions VCLs. I 
> looked over few of them but I am not so happy.
>
> The priorities are in this order:
>  -to work under all Delphi compilers !!!
>  -easy to use
>  -on the fly compression
>  -price
>  -source code
>
> Please let me know if you know something close to this.
>
>
>
> Gabriel
>
>
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