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WdfDeviceGetDevicePnpState method

[Applies to KMDF only]

The WdfDeviceGetDevicePnpState method returns the current state of the framework's Plug and Play state machine for a specified device.

Syntax


WDF_DEVICE_PNP_STATE WdfDeviceGetDevicePnpState(
  [in]  WDFDEVICE Device
);

Parameters

Device [in]

A handle to a framework device object.

Return value

WdfDeviceGetDevicePnpState returns a WDF_DEVICE_PNP_STATE-typed enumerator that identifies the current state of the framework's Plug and Play state machine for the specified device.

A bug check occurs if the driver supplies an invalid object handle.

Remarks

Most drivers do not need to be aware of the state of the framework's Plug and Play state machine. For more information about the framework's state machines, see State Machines in the Framework.

Examples

The following code example obtains the current state of the framework's Plug and Play state machine for a specified device.


WDF_DEVICE_PNP_STATE state;

state = WdfDeviceGetDevicePnpState(Device);

Requirements

Minimum KMDF version

1.0

Header

Wdfdevice.h (include Wdf.h)

Library

Wdf01000.sys (see Framework Library Versioning.)

IRQL

<= DISPATCH_LEVEL

DDI compliance rules

DriverCreate, KmdfIrql, KmdfIrql2

See also

WdfDeviceGetDevicePowerPolicyState
WdfDeviceGetDevicePowerState
WdfDevStateNormalize

 

 

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