Microsoft Print to PDF
As an alternative to using the ISD FilePrinter you can also use the Windows functionalityt Microsoft Print to PDF for printing PDF files.
The exact setup may differ slightly depending on the Windows version. Basically, you have to call up the Control Panel, go to Printers & scanners and then to the submenu for Microsoft Print to PDF.
There, go to Printer properties and then on the Ports tab:
Click on Add Port... > Local Port > New Port..., enter the path of the destination file, e.g. "C:\Temp\Temp.pdf".
From then on, the output of the printer is redirected to the specified PDF file without prompting.
The HELiOS Spooler recognises this and "fetches" the file from there.