IPnpCallbackHardware 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.]
The IPnpCallbackHardware interface is a Plug and Play (PnP) and power management (PM) interface.
Inheritance
The IPnpCallbackHardware interface inherits from the IUnknown interface. IPnpCallbackHardware also has these types of members:
- Methods
Methods
The IPnpCallbackHardware interface has these methods.
| IPnpCallbackHardware::OnPrepareHardware The OnPrepareHardware method notifies a driver to make the specified hardware accessible. |
| IPnpCallbackHardware::OnReleaseHardware The OnReleaseHardware method notifies a driver to perform operations that are necessary when the specified hardware is no longer accessible. |
Remarks
A driver registers the IPnpCallbackHardware interface when the driver calls the IWDFDriver::CreateDevice method to create a device object.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | wudfddi.h (include Wudfddi.h) |