As developers we can spend quite a lot of effort getting the flow right for our application to make life easier for our users. However since the nature of Pocket PC devices is to make everything compact and small the amount of screen space available for buttons on our application is rather limited. Rather than having layers of options hidden menus and screens we can make use of the other hardware buttons on the device. The Sapphire Buttons Function Library allows your application to identify if a button was pressed by the user. Based on what was pressed you can perform a specific function or display a specific screen. It also helps you users from losing the application by accidentally pressing the button for one of the system applications. The Sapphire Buttons Function Library makes reading the button status easy with functionality such as Checking what button is pressed Retrieving the button name and Enabling and disabling system buttons. Royalty Free Licence. When you purchase a developers licence you are free to use the DLL in any number of your projects and deploy it to all the devices to your clients. Theres 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.