Here is what I did to successfully implement dynamic QR code generation within Breezing Forms using Google's Infographic QR Code generator (this api is unfortunately depreciated, but still works at the time of posting):
1. To use this just as a QR Code generator and not a form that actually gets saved/submitted, disable the submit button option in the form's properties.
2. On your last page (or thank-you page if submitting the form), create a new section. Call it something meaningful.
3. [Edit] the section Description. Click [Toggle Editor] to turn off the default editor and enter code-mode. Enter the following into the window (change the "float" value as required -- I wanted my QR code to float right of the other elements):
This is a placeholder for the the QR code.
4. Within the section, create a new text element, and name it QRCode_url. I wanted to show the user the raw link, so I left it visible, but you should be able to [Advanced -> Turn Off] if you don't want to show it.[/li] [li]With this element, select the [Advanced] tab, then [Initscript -> Custom] and turn on only [Page Entry]. Paste the following code into the [Create code framework] box, adding more url+= declarations for all the BF fields you need to encode.
My final output page looks like this:
Many thanks to StThereseInstitute for this solution.