When you use dopdf you do have to click on “Print.” Instead of printing off the entire file on paper on your regular printer, select “doPDF” from the printer list. Then you are given the option to browse for a save location (while saving as a PDF).
I think we are talking past each other. DoPDF captures the printout before it gets to the printer and converts it to pdf. CHM does not allow you to print the complete document and you have to do it in stages which is a PITA. Or does printing from doPDF handle this?