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MS Office Forum / Excel / Programming / January 2008Power API
I am building an Excel alarm clock for a laptop. I am updating the display with an OnTime event. One of the requirements is to autonomously detect if the laptop switches from A/C power to its internal battery. Has anyone come across an API that will return the power state? Say TRUE if A/C, FALSE if battery? Thanks for any leads.  SignatureGary''s Student - gsnu200766 Sorry i don't know who to give credit to as i found this some time ago and modified it. Enjoy! Declare Function GetSystemPowerStatus& Lib "kernel32" (lpSystemPowerStatus As _ SYSTEM_POWER_STATUS) Type SYSTEM_POWER_STATUS ACLineStatus As Byte BatteryFlag As Byte BatteryLifePercent As Byte Reserved1 As Byte BatteryLifeTime As Long BatteryFullLifeTime As Long End Type Public SysStat As SYSTEM_POWER_STATUS Public Ret As Boolean '*************************** ' Place in command button click Private Sub Command1_Click() Ret = GetSystemPowerStatus&(SysStat) MsgBox Ret MsgBox "AC Status = " & SysStat.ACLineStatus End Sub '***************************** Ret is True if successful. ACLineStatus =0 if offline (battery?), 1 if online (AC Power, also desktop), 255 if unknown (Aliens?) Signature-John Please rate when your question is answered to help us and others know what is helpful. > I am building an Excel alarm clock for a laptop. I am updating the display > with an OnTime event. One of the requirements is to autonomously detect if [quoted text clipped - 4 lines] > > Thanks for any leads. Maybe... Private Declare Function GetDevicePowerState Lib "kernel32.dll" _ (ByVal hDevice As Long, ByRef pfOn As Long) As Long http://msdn2.microsoft.com/en-us/library/aa372690.aspx Private Declare Function GetSystemPowerStatus Lib "kernel32.dll" _ (ByRef lpSystemPowerStatus As SYSTEM_POWER_STATUS) As Long http://msdn2.microsoft.com/en-us/library/aa372693(VS.85).aspx SignatureJim Cone San Francisco, USA http://www.realezsites.com/bus/primitivesoftware (Excel Add-ins / Excel Programming) "Gary''s Student" wrote in message I am building an Excel alarm clock for a laptop. I am updating the display with an OnTime event. One of the requirements is to autonomously detect if the laptop switches from A/C power to its internal battery. Has anyone come across an API that will return the power state? Say TRUE if A/C, FALSE if battery? Thanks for any leads. -- Gary''s Student - gsnu200766 Thank Jim (once again) ! SignatureGary''s Student - gsnu200766 > Maybe... > [quoted text clipped - 5 lines] > (ByRef lpSystemPowerStatus As SYSTEM_POWER_STATUS) As Long > http://msdn2.microsoft.com/en-us/library/aa372693(VS.85).aspx Actually this looks to be the link and it contains some more info, about 2/3 the way down. http://www.codeguru.com/forum/archive/index.php/t-199354.html Signature-John Please rate when your question is answered to help us and others know what is helpful. > I am building an Excel alarm clock for a laptop. I am updating the display > with an OnTime event. One of the requirements is to autonomously detect if [quoted text clipped - 4 lines] > > Thanks for any leads. Thanks John!! SignatureGary''s Student - gsnu200766 > Actually this looks to be the link and it contains some more info, about 2/3 > the way down. [quoted text clipped - 9 lines] > > > > Thanks for any leads. |
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