Function Discovery Sample

[Function Discovery is available for use in the following versions of Windows: Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008, and Windows Vista. It may be altered or unavailable in subsequent versions.]

The Function Discovery sample demonstrates the use of Function Discovery API. The source code for the sample can be found in the SDK installation location under C:\Program Files\Microsoft SDKs\Windows\<version number>\Samples\winbase\DeviceFoundation\FunctionDiscovery\Client. The Windows Vista SDK is available from the Download Center.

The Function Discovery sample performs the following tasks:

• Queries the PnP provider for function instances. The IFunctionDiscovery::CreateInstanceCollectionQuery and IFunctionInstanceCollectionQuery::Execute methods are used.
• Displays the list of PnP devices available on the machine. The GetCount and Item methods of the IFunctionInstanceCollection interface are used.
• Displays the metadata associated with the device. The IFunctionInstance::OpenPropertyStore method is used.
• Handles PnP notifications. The OnUpdate, OnError, and OnEvent methods of the IFunctionDiscoveryNotification interface are implemented.

Related topics

Using Function Discovery

Using Function Discovery Providers

Function Discovery Provider Sample