IWDFDevice2 interface (wudfddi.h)

[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]

Drivers obtain the IWDFDevice2 interface by calling IWDFDevice::QueryInterface.


The IWDFDevice2 interface inherits from IWDFDevice. IWDFDevice2 also has these types of members:

  • Methods


The IWDFDevice2 interface has these methods.


The AssignS0IdleSettings method provides driver-supplied information that the framework uses when a device is idle and the system is in its working (S0) state.

The AssignSxWakeSettings method provides driver-supplied information about a device's ability to trigger a wake signal while both the device and the system are in a low-power state.

The CreateRemoteInterface method creates a remote interface object that represents a device interface.

The CreateRemoteTarget method creates a remote target object that represents a remote I/O target.

TheCreateSymbolicLinkWithReferenceString method creates a symbolic link name, and optionally, a reference string, for a device.

The GetDeviceStackIoTypePreference method retrieves the buffer access methods that the framework is using for a device.

The GetSystemPowerAction method returns the system power action, if any, that is currently occurring for the computer.

The RegisterRemoteInterfaceNotification method registers a driver to receive a notification when a specified device interface becomes available.

The ResumeIdle method informs the framework that the device is not in use and can be placed in a device low-power state if it remains idle.

The StopIdle method informs the framework that the device must be placed in its working (D0) power state.


End of support Unavailable in UMDF 2.0 and later.
Target Platform Desktop
Minimum UMDF version 1.9
Header wudfddi.h (include Wudfddi.h)