>>From VFP, I want to Print 3 PDF files in succession to a printer which is not the currently set default printer.
>>Notes:
>>ShellExecute appears to only print to the default printer.
>>Using ShellExecute, if I reset the default Printer and Print the 3 files, then when I restore the default printer to the original printer name, before the printer has not completed it's 3 jobs then I find that the last copies go to the wrong printer.
>>Using the SET PRINTER TO command has no effect when Printing via Shell Execute
>
>Not necessarily. It will if a registry entry doesn't exist for the Print verb. Check your registry for the following key:
>HKEY_CLASSES_ROOT\.PDF\Shell\Print\Command
>
>It should have a reference to the Acrobat printer.

It's not necessarily that hive - using Acrobat 5.0 and up, the hive of interest is HKCR\AcroExch.Document; and even better, there's a PrintTo verb supported, which allows you to specify the print device du jour as a part of the ShellExecute(). Take a look at HKCR\AcroExch.Document\shell\printto\command, which takes a number of optional parameters that will either trigger a Printer Select dialog, or will name a printer to use by its local moniker.