WDF_DEVICE_POWER_POLICY_NOTIFICATION_DATA structure
[Applies to KMDF only]
The WDF_DEVICE_POWER_POLICY_NOTIFICATION_DATA structure describes a state change within a device's power policy state machine.
Syntax
typedef struct _WDF_DEVICE_POWER_POLICY_NOTIFICATION_DATA { WDF_STATE_NOTIFICATION_TYPE Type; union { struct { WDF_DEVICE_POWER_POLICY_STATE CurrentState; WDF_DEVICE_POWER_POLICY_STATE NewState; } EnterState; struct { WDF_DEVICE_POWER_POLICY_STATE CurrentState; } PostProcessState; struct { WDF_DEVICE_POWER_POLICY_STATE CurrentState; WDF_DEVICE_POWER_POLICY_STATE NewState; } LeaveState; } Data; } WDF_DEVICE_POWER_POLICY_NOTIFICATION_DATA;
Members
- Type
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A WDF_STATE_NOTIFICATION_TYPE-typed enumerator that identifies the type of state change that is being reported.
- Data
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- EnterState
-
- CurrentState
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If Type is StateNotificationEnterState, this WDF_DEVICE_POWER_POLICY_STATE-typed enumerator identifies the state machine's current state.
- NewState
-
If Type is StateNotificationEnterState, this WDF_DEVICE_POWER_POLICY_STATE-typed enumerator identifies the state machine's next state.
- PostProcessState
-
- CurrentState
-
If Type is StateNotificationEnterState, this WDF_DEVICE_POWER_POLICY_STATE-typed enumerator identifies the state machine's current state.
- LeaveState
-
- CurrentState
-
If Type is StateNotificationEnterState, this WDF_DEVICE_POWER_POLICY_STATE-typed enumerator identifies the state machine's current state.
- NewState
-
If Type is StateNotificationEnterState, this WDF_DEVICE_POWER_POLICY_STATE-typed enumerator identifies the state machine's next state.
Remarks
The WDF_DEVICE_POWER_POLICY_NOTIFICATION_DATA structure is an input argument to a driver's EvtDevicePowerPolicyStateChange callback function.
Requirements
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Minimum KMDF version | 1.0 |
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Header |
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See also
