PO_EFFECTIVE_POWER_MODE_CALLBACK callback function (wdm.h)

Article
05/22/2024

The PO_EFFECTIVE_POWER_MODE_CALLBACK is the effective power mode callback.

Syntax

PO_EFFECTIVE_POWER_MODE_CALLBACK PoEffectivePowerModeCallback;

void PoEffectivePowerModeCallback(
  PO_EFFECTIVE_POWER_MODE Mode,
  VOID *Context
)
{...}

Parameters

Mode

Indicates the effective power mode the system is running in. For more information, see PO_EFFECTIVE_POWER_MODE.

Context

User-specified opaque context. This context would have been passed in at registration in PoRegisterForEffectivePowerModeNotifications.

Return value

None

Remarks

Immediately after registration, this callback is invoked with the current value of the power setting. If the registration occurs while the power setting is changing, you may receive multiple callbacks. The last callback is the most recent update.

Requirements

Requirement	Value
Minimum supported client	Windows 11, version 24H2
Header	wdm.h (include Wdm.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe

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