I want to print two PDF files in the same time on two different printers. I am trying to use the following solution:

SetDefaultPrinter('Printer1')
ShellExecute(0, 'print', 'c:\file1.pdf', '', '', 0)

SetDefaultPrinter('Printer2')
ShellExecute(0, 'print', 'c:\file2.pdf', '', '', 0)

But both files are printed to the Printer2. Any idea how to do that?

Thanks