Question

How can I read the status of the battery on my MacBookPro from my own application?

Googling has so far only revealed APIs for device drivers to handle power events – there’s nothing about user-land processes accessing this information.

thanks.

Answer 1

You’ll want to use IOKit for this, specifically the IOPowerSources functions. You can use IOPSCopyPowerSourcesInfo() to get a blob, and IOPSCopyPowerSourcesList() to then extract a CFArray out of that, listing the power sources. Then use IOPSGetPowerSourceDescription() to pull out a dictionary (see IOPSKeys.h for the contents of the dictionary).