
Printer Discovery
The discover devices functionality of Printer Manager:
- discovers any connected Datecs DPP-250 handheld printers
 - registers to receive device status updates
 - registers to receive action result updates
 - prepares Printer Manager for the reception of the data after a barcode is scanned
 
So, related to the last point above, the main task for you is to implement a method that handles the dataReceived. 
The User Interface
A typical user interface might look like this:

The Sample Code
For simplicity, the sample code utilizes the first printer that is found, however, if necessary you can handle this in a more sophisticated way and deal with more than one printer.
Warning
In the iOS code, the base class needs to conform to WDPrinting. 
            Universal Windows Platform SDK coming soon