PowerReadACDefaultIndex function (powrprof.h)

Retrieves the default AC index of the specified power setting.

Syntax

DWORD PowerReadACDefaultIndex(
  HKEY       RootPowerKey,
  const GUID *SchemePersonalityGuid,
  const GUID *SubGroupOfPowerSettingsGuid,
  const GUID *PowerSettingGuid,
  LPDWORD    AcDefaultIndex
);

Parameters

RootPowerKey

This parameter is reserved for future use and must be set to NULL.

SchemePersonalityGuid

The identifier for the scheme personality for this power setting. A power setting can have different default values depending on the power scheme personality.

SubGroupOfPowerSettingsGuid

The subgroup of power settings. This parameter can be one of the following values defined in WinNT.h. Use NO_SUBGROUP_GUID to retrieve the setting for the default power scheme.

Value Meaning
NO_SUBGROUP_GUID
fea3413e-7e05-4911-9a71-700331f1c294
Settings in this subgroup are part of the default power scheme.
GUID_DISK_SUBGROUP
0012ee47-9041-4b5d-9b77-535fba8b1442
Settings in this subgroup control power management configuration of the system's hard disk drives.
GUID_SYSTEM_BUTTON_SUBGROUP
4f971e89-eebd-4455-a8de-9e59040e7347
Settings in this subgroup control configuration of the system power buttons.
GUID_PROCESSOR_SETTINGS_SUBGROUP
54533251-82be-4824-96c1-47b60b740d00
Settings in this subgroup control configuration of processor power management features.
GUID_VIDEO_SUBGROUP
7516b95f-f776-4464-8c53-06167f40cc99
Settings in this subgroup control configuration of the video power management features.
GUID_BATTERY_SUBGROUP
e73a048d-bf27-4f12-9731-8b2076e8891f
Settings in this subgroup control battery alarm trip points and actions.
GUID_SLEEP_SUBGROUP
238C9FA8-0AAD-41ED-83F4-97BE242C8F20
Settings in this subgroup control system sleep settings.
GUID_PCIEXPRESS_SETTINGS_SUBGROUP
501a4d13-42af-4429-9fd1-a8218c268e20
Settings in this subgroup control PCI Express settings.

PowerSettingGuid

The identifier for the single power setting.

AcDefaultIndex

A pointer to a variable that receives the default AC index.

Return value

Returns ERROR_SUCCESS (zero) if the call was successful, and a nonzero value if the call failed.

Requirements

   
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header powrprof.h
Library PowrProf.lib
DLL PowrProf.dll

See also

Power Management Functions