I am developing an invoice printing program and want to be able to control the printer as follows:

1. Optionally send a message to the originating user to ask if invoice forms have been loaded. If the answer is yes, start printing, else wait and resend the message. Optionally suspend the printing without deleting it from the spooler or cancel it, deleting it from the spooler.

2. When the first invoice has been printed, send a message asking if the paper is aligned properly, optionally reprint the first page else continue printing.

3. When printing has finished, send a message asking if the printout was OK, optionally reprinting the entire job, reprinting from a certain page to the end or else finishing the job with the option to delete the job from the spooler or keep it for a possible later reprint.

All this on networked line-printers or dot-matrix printers.

I would like to be able to do this bypassing the Windows spooler if possible.

Is all this possible or am I asking too much??