SYSTEM_POWER_STATUS structure
Contains information about the power status of the system.
Syntax
typedef struct _SYSTEM_POWER_STATUS { BYTE ACLineStatus; BYTE BatteryFlag; BYTE BatteryLifePercent; BYTE SystemStatusFlag; DWORD BatteryLifeTime; DWORD BatteryFullLifeTime; } SYSTEM_POWER_STATUS, *LPSYSTEM_POWER_STATUS;
Members
- ACLineStatus
-
The AC power status. This member can be one of the following values.
Value Meaning - 0
Offline
- 1
Online
- 255
Unknown status
- BatteryFlag
-
The battery charge status. This member can contain one or more of the following flags.
Value Meaning - 1
High—the battery capacity is at more than 66 percent
- 2
Low—the battery capacity is at less than 33 percent
- 4
Critical—the battery capacity is at less than five percent
- 8
Charging
- 128
No system battery
- 255
Unknown status—unable to read the battery flag information
The value is zero if the battery is not being charged and the battery capacity is between low and high.
- BatteryLifePercent
-
The percentage of full battery charge remaining. This member can be a value in the range 0 to 100, or 255 if status is unknown.
- SystemStatusFlag
-
The status of battery saver. To participate in energy conservation, avoid resource intensive tasks when battery saver is on. To be notified when this value changes, call the RegisterPowerSettingNotification function with the power setting GUID, GUID_POWER_SAVING_STATUS.
Value Meaning - 0
Battery saver is off.
- 1
Battery saver on. Save energy where possible.
Note This flag and the GUID_POWER_SAVING_STATUS GUID were introduced in Windows 10. This flag was previously reserved, named Reserved1, and had a value of 0.For general information about battery saver, see battery saver (in the hardware component guidelines).
- BatteryLifeTime
-
The number of seconds of battery life remaining, or –1 if remaining seconds are unknown or if the device is connected to AC power.
- BatteryFullLifeTime
-
The number of seconds of battery life when at full charge, or –1 if full battery lifetime is unknown or if the device is connected to AC power.
Remarks
The system is only capable of estimating BatteryFullLifeTime based on calculations on BatteryLifeTime and BatteryLifePercent. Without smart battery subsystems, this value may not be accurate enough to be useful.
Requirements
|
Minimum supported client |
Windows XP [desktop apps only] |
|---|---|
|
Minimum supported server |
Windows Server 2003 [desktop apps only] |
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Header |
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See also