Restrict Repeat Cheque Print

Hi ,

I need some of your help regarding restricting repeat cheque printing .

Once a cheque is printed , it can not be printed again .

But here we have customised form , customised program and customised t-code for that .

Can we maintain a z table while a cheque is printing for the first time? problem is we can not distinguish

print / print preview in that case . if a spool generated then we can consider print has been done for that

cheque number , but how did we trace that spool no inside in the print program?

Any idea will be helpful for us .

Thanks:

Atanu