Contains information about the power status of the system.
Syntax
typedef struct _SYSTEM_POWER_STATUS {
BYTE ACLineStatus;
BYTE BatteryFlag;
BYTE BatteryLifePercent;
BYTE Reserved1;
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.
- Reserved1
Reserved; must be zero.
- BatteryLifeTime
The number of seconds of battery life remaining, or –1 if remaining seconds are unknown.
- BatteryFullLifeTime
The number of seconds of battery life when at full charge, or –1 if full battery lifetime is unknown.
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 2000 Professional |
|---|
| Minimum supported server | Windows 2000 Server |
|---|
| Header | Winbase.h (include Windows.h) |
|---|
See Also
- GetSystemPowerStatus
- PBT_APMPOWERSTATUSCHANGE
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Build date: 11/19/2009