How to watch the print?

[Joffre]

Hello everyone,

Normally persons print something freely and have no more record or log to check, it's dangerous to us. Since someone print out our technology drawing and make it open, so I wanna find a way to keep the print record and check the printing data when need. If printing from command, it's easy to backup the printing data  and record the operation at the same time. But if he print from the software window, normally there's one menu to print directly,  I have no way to keep the tail. Is there any way to keep the printing data's snapshot? either other ways to do?

Some person let me to try cups printing's hooks or the spooler, but I have  no more idea to it. Would you please give some advice?

Have a good day!

B.R.

Joffre