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Overview |
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Group |
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Quick Info
Windows NT
| No
| Win95
| Yes
| Win32s
| No
| Import Library
| -
| Header File
| pbt.h
| Unicode
| No
| Platform Notes
| None
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PBT_APMPOWERSTATUSCHANGE
The PBT_APMPOWERSTATUSCHANGE message is sent when a change in the power status
of the computer is detected, such as a switch from battery power to A/C or a
drop in remaining battery power below a threshold. A window receives this
message through the WM_POWERBROADCAST message.
dwData = (DWORD) lParam;
Parameters
dwData
Reserved; must be 0.
Return Values
No return value.
Remarks
An application should process this message by calling the GetSystemPowerStatus function to retrieve the current power status of the computer. In particular,
the application should check the ACLineStatus, BatteryFlag, BatteryLifeTime, and BatteryLifePercent members of the SYSTEM_POWER_STATUS structure for any changes. This message can occur when the battery life time
drops to less than 5 minutes, or when the percentage of battery life drops
below 10 percent.
See Also
GetSystemPowerStatus, SYSTEM_POWER_STATUS, WM_POWERBROADCAST
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