Other Power Management APIs (Windows CE 5.0)
The Power Manager builds on the standard Windows CE power architecture. Regardless of whether they are aware of Power Manager, stream device drivers will be notified through XXX_PowerUp (Device Manager) and XXX_PowerDown (Device Manager) when the system suspends and resumes. The following table shows the APIs related to power management.
| Function | Description |
|---|---|
| GetSystemPowerStatusEx2 | Retrieves battery status information. |
| PowerPolicyNotify | Notifies the power manager of the events that are necessary in order to implement a power policy created by an OEM. |
| OEMIdle | Called by the kernel to place the microprocessor in the idle state when there are no threads ready to run. |
| OEMPowerOff | Invoked when the OFF button is pressed or the Graphics, Windowing, and Events Subsystem (GWES) times out on its power-off timer. It is responsible for any final power-off state and putting the microprocessor into suspend mode. |
| XXX_PowerDown (Device Manager) | Suspends power to the device. It is useful only with devices that can be shut off under software control. |
| XXX_PowerUp (Device Manager) | Restores power to a device. |
See Also
Power Management Architecture | How to Add Power Management to a Device Driver
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