Check out the following relevant threads:
In summary you could use 'pdftron.PDF.Print.StartPrintJob' from a worker thread, but there are also other options (e.g. use MS XPS Print API etc).
On Sunday, December 30, 2012 9:29:55 AM UTC-8, JT wrote:
I'm using the startprintjob to print out pdf files. Is there an event I can use to display my own progress dialog to the user? I tried catching the printdocument.printpage event but it never triggered.