How to receive battery information using the WinAPI

This sample show's how to retrieve the current battery information for your laptop without the need for the SysInfo.ocx control.

Screen Shot

The program utilises the following API call's and structure to obtain the information :


private Declare Function GetSystemPowerStatus Lib "kernel32" _
        (lpSystemPowerStatus as SYSTEM_POWER_STATUS) as Long
private Declare Function SetSystemPowerState Lib "kernel32" _
        (byval fSuspend as Long, byval fForce as Long) as Long

private Type SYSTEM_POWER_STATUS
    ACLineStatus as Byte 'Checks to see if you're connected to the
    'wall outlet or not
    BatteryFlag as Byte 'Battery status
    BatteryLifePercent as Byte 'precentage left
    Reserved1 as Byte 'Dont use
    BatteryLifeTime as Long 'Total time left of your battery
    BatteryFullLifeTime as Long 'Total UPtime of your battery
End Type





As you can see, it takes up much less space in your program and distributable than the 67k required by SysInfo.ocx

Download zipped project file (7k)


Comments

  • battery level programming

    Posted by Legacy on 11/19/2003 12:00am

    Originally posted by: jerome

    very useful, thanks...

    Reply
  • SetSystemPowerState

    Posted by Legacy on 01/13/2000 12:00am

    Originally posted by: Niraj Bhatt

    I can not see the use of this API in your sample..

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • On-demand Event Event Date: February 12, 2015 The evolution of systems engineering with the SysML modeling language has resulted in improved requirements specification, better architectural definition, and better hand-off to downstream engineering. Agile methods have proven successful in the software domain, but how can these methods be applied to systems engineering? Check out this webcast and join Bruce Powel Douglass, author of Real-Time Agility, as he discusses how agile methods have had a tremendous …

  • Are you truly leading your team or simply managing them? Organizations need leaders and your team needs someone to follow. With some ongoing development, you could become that leader. Learn the top leadership qualities that inspire others to want to follow you and the direction of your company.

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date