Printing from your application can be a very useful tool in a situation where you need to give a receipt to your customer direct from your Pocket PC. The ideal solution is to use an IrDA enabled printer with the IrDA port on your device. The Sapphire IrDA Function Library allows you to print to such a printer right within your application. The Sapphire IrDA Function Library makes infra-red printing easy with functionality such as Establishing a connection with a IrDA enabled printer, printing text, new lines and form feeds. Royalty Free Licence. When you purchase a developer’s licence, you are free to use the DLL in any number of your projects and deploy it to all the devices to your clients. There’s no need for royalties based on the scale of your project, just a one off fee. You will also get 12 months email support and discounted upgrades for future developments.