Digital BW, The Print

On Sat, 14 Aug 2004, Stephen Billard wrote:

> 
> Ah!
> 
> Any one have an idea of how I should handle this? I could delete the
> previous file, but I didn't want to delete any files in case you wanted them
> again. 
> 
> -Stephen
>  www.sbillard.org/Stephen
> 

My recommendation would complicate your code a bit, but I think ultimately it would make it easier for the user.

1. Don't move any files.  Once you're done processing them, you can create a zero-length file in the processed folder of the same filename which indicates it has already been processed.

2. If the user prints again using the same file, you can detect that the timestamp on the real file is now more current than the timestamp of the zero-length file and print it again.

3. If the user cleans up the drop folder by deleting or moving old files, you can detect this and delete any files from the processed folder that are no longer needed.

--Tom