![]() By implementing handlers, the app can save app or session data before the state changes. Windows notifies the app about the state through Suspending and Resuming events. Windows can suspend, resume, or terminate an app as a result of a change in system state or user action. There two types of events that the app handles: This class implements all event handlers required by the sample app. For example, the UI uses this class to get the device interface path so that the user can identify the device and use it for data transfers. This class is used by the UI to display device-specific information. This class stores DeviceInformation objects associated with each device, dynamically detected by the DeviceWatcher object. When the app is activated, the user is shown information about which device launched the app. The OnActivated implementation causes the app to get launched when the device is connected to the system. Invoked when the sample app is activated. How to handle app suspension and resume eventsįor step-by-step instructions about implementing USB features in a Windows Runtime app, see Talking to USB devices, start to finish and Writing a Windows store app for a USB device.The sample demonstrates these key scenarios: You must update the device firmware before using it (discussed later). You can purchase the device from JJG Technologies. You can get the learning kit from OSR Online. The sample can communicate with these devices: ![]() The samples collection, and GitHub, see Get the UWP samples from GitHub.įor more samples, see the Samples portal on the Windows Dev Center. For more info on working with the ZIP file, Sure to unzip everything to access shared dependencies. Or you can download the entire collection as a single You can download this sample as a standalone ZIP file Note: This sample is part of a large collection of UWP feature samples. Shows how to communicate with a USB device by using the namespace.
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