Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 645)

C H A P T E R 1 7
Additional System Services
Summary of Additional System Services 17-29
Power Registry 17
Functions and Methods 17
BatteryCount() //returns battery count
BatteryStatus( which ) //returns info about battery
RegPowerOff( callbackID , callBackFn ) //registers a power-off
//callback fn.
UnRegPowerOff( callBackID ) //unregisters a power-off
//callback fn.
PowerOffResume( appSymbol ) //resumes power-off sequence
RegPowerOn( callbackID , callBackFn ) //registers a power-on
//callback fn.
UnRegPowerOn( callbackID ) //unregisters a power-on handler
loginScreen :RegLogin( appSymbol , callBackFn ) //registers a login
//screen callback fn.
loginScreen :UnRegLogin( callbackID ) //unregisters a login
//screen callback fn.