>Thank you Ian
>I made a test for scanning all files on my PC (2 discs and nearly 700.000 files):operation takes nearly 15 mn.
>That want to say any modification (deleting a file for ex or creating another ones,moving files....) is not integrated in the last scan
>and any search is not 'live time'.its asynchronous and the search is not fair,the results also in little part.
>
>your idea to update the initial files scan only if modifications occured on system is good.
>i remember that in windows events as the sample follow does:
>

>DO FORM home(1)+"samples\solution\europa\windowsevents.scx"
>

>must choose "files folder events" in combo and "all locations" option ("no").Any modification on any file on PC is trapped here but
>this recquires the application must run on background all time (service?) to trap all windows messages occured and update the first scan table online
>the search result becomes runtime at this step.
>a complet scan maybe must be applyed at some long interval (one per week maybe for ex.).
>
>have you experimented this kind of monitoring ?

No I'm afraid I haven't. Everything.exe works well enough for me :-)