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Writing Windows WDM Device DriversA driver would only support such a setting if there is a significant user noticeable effect for powering off the device. E.g., turning on the device may cause a user noticeable delay. Regardless of this setting, the driver is still required to support system sleeping states irps (which likely translates to powering off the device when a system sleep occurs)."), guid("827c0a6f-feb0-11d0-bd26-00aa00b7b32a"), locale("MS\\0x409")] class MSPower_DeviceEnable { [key, read] string InstanceName; [read] boolean Active; [WmiDataId(1), read, write] boolean Enable; }; A WMI Driver A WDM driver can use WMI mechanisms to publish information, permit configuration of its device, and supply notifications of events. It should continue to report standard Windows 2000 events, as many system administrators will still be looking for this event information. However, WMI is the way forward, as it allows information to be made available on non-W2000 systems, and it allows remote inspection and control of the device. WDM drivers, NT style drivers, and miniport drivers/minidriver can support WMI ...» |
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