How to print a single job to another printer simultaneously?

Hi All

I’m writing print processor and print monitor for creating EMF spool file.

I wonder that print a single job to another printer simultaneously.
I’m tried to print an another printer using ShellExecute API.
It’s fine, but it don’t work specified application with view frame.

How can I reprint the print job without launching the original
application?

Anyone help?

Taery.