Access SYSTEM_POWER_STATE_CONTEXT from user-mode code

Asked Jun 03 '15 at 21:16

Active Jun 03 '15 at 21:16

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I'm curious if there's a way (even if undocumented) to access SYSTEM_POWER_STATE_CONTEXT from a Windows local service written in C++ running in user-mode?

My goal is to distinguish between the system waking from sleep vs. hibernation, similar to what they describe here.

asked Jun 03 '15 at 21:16

c00000fd

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I'm not sure what you're trying to do: is there a difference accessing the pw state ctx from a regular user or LocalSystem? – CristiFati Jun 03 '15 at 22:43
@CristiFati: From LocalSystem – c00000fd Jun 03 '15 at 23:24
Again, is there a difference? – CristiFati Jun 03 '15 at 23:27
@CristiFati: the documented method for obtaining `SYSTEM_POWER_STATE_CONTEXT` only applies to device drivers. You can't use it from a system service; if it is possible at all, it will require a different method. – Harry Johnston Jun 03 '15 at 23:50
Sorry, i was looking at MSDN. – CristiFati Jun 04 '15 at 00:02

Access SYSTEM_POWER_STATE_CONTEXT from user-mode code

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