Книга: Microsoft Windows Embedded CE 6.0 Exam Preparation Kit
Application Interface
Application Interface
The application interface provides functions that applications can use to manage the power state of the system and of individual devices through Power Manager. Table 3-18 summarizes these power management functions.
Table 3-18 Application interface
| Function | Description |
|---|---|
| GetSystemPowerState | Retrieves the current system power state. |
| SetSystemPowerState | Requests a power state change. When switching to Suspend mode, the function will return after the resume because suspend is transparent to the system. After the resume, you can analyze the notification message to identify that the system resumed from suspend. |
| SetPowerRequirement | Requests a minimal power state for a device. |
| ReleasePowerRequirement | Releases a power requirement previously set with the SetPowerRequirement function and restores the original device power state. |
| GetDevicePower | Retrieves the current power state of a specified device. |
| SetDevicePower | Requests a power state change for a device. |
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