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Device Power Capabilities (Windows Embedded CE 6.0)

1/6/2010

IOCTL_POWER_CAPABILITIES queries device-specific characteristics, including latency, power consumption, system wake, and inrush, from the device driver during Plug-and-Play enumeration. The device driver also reports which device power states it supports in its response to this IOCTL.

Power Manager generally does not request that a device go into a power state that it does not support. However, a driver developer should not assume such requests will not occur. Because a Windows Embedded CE-based device OEM can customize Power Manager, the OEM can choose to ignore the DeviceDx field of the POWER_CAPABILITIES structure.

See Also

Reference

POWER_CAPABILITIES

Other Resources

Device Power Management Guidelines