Bewerken

Delen via

DEVICE_POWER_STATE enumeration (wudfddi.h)

  • Artikel

[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 DEVICE_POWER_STATE enumeration identifies the device power states that a device can enter.

Syntax

typedef enum _DEVICE_POWER_STATE {
  PowerDeviceUnspecified,
  PowerDeviceD0,
  PowerDeviceD1,
  PowerDeviceD2,
  PowerDeviceD3,
  PowerDeviceMaximum
} DEVICE_POWER_STATE, *PDEVICE_POWER_STATE;

Constants

 
PowerDeviceUnspecified
The device power state is unspecified.
PowerDeviceD0
The device's working (D0) state. This is the device's highest power state.
PowerDeviceD1
The device's D1 sleeping state.
PowerDeviceD2
The device's D2 sleeping state.
PowerDeviceD3
The device's D3 sleeping state.
PowerDeviceMaximum
For system use only.

Remarks

The DEVICE_POWER_STATE enumeration is used as input to IWDFDevice2::AssignS0IdleSettings and IWDFDevice2::AssignSxWakeSettings.

Requirements

Requirement Value
Minimum UMDF version 1.9
Header wudfddi.h (include Wudfddi.h)

See also

IWDFDevice2::AssignS0IdleSettings

IWDFDevice2::AssignSxWakeSettings