POWER_ACTION enumeration (wdm.h)

The POWER_ACTION enumeration identifies the system power actions that can occur on a computer.

Syntax

typedef enum {
  PowerActionNone,
  PowerActionReserved,
  PowerActionSleep,
  PowerActionHibernate,
  PowerActionShutdown,
  PowerActionShutdownReset,
  PowerActionShutdownOff,
  PowerActionWarmEject,
  PowerActionDisplayOff
} POWER_ACTION, *PPOWER_ACTION;

Constants

PowerActionNone No power action is taking place.
PowerActionReserved Reserved for system use.
PowerActionSleep The computer is entering a system sleeping (S1, S2, or S3) state.
PowerActionHibernate The computer is entering its hibernation (S4) state.
PowerActionShutdown The computer is entering its shutdown (S5) state. After all devices have entered their off (D3) state, the computer remains powered on until an administrator presses the power button.
PowerActionShutdownReset The computer is entering its shutdown (S5) state. After all devices have entered their off (D3) state, the computer automatically powers off and then immediately restarts and returns to its working (S0) state.
PowerActionShutdownOff The computer is entering its shutdown (S5) state. After all devices have entered their off (D3) state, the computer automatically powers off.
PowerActionWarmEject The computer is being ejected from an ACPI-compatible dock device. Typically, the computer's power state does not change.
PowerActionDisplayOff

Requirements

Requirement	Value
Header	wdm.h (include Wdm.h)