Detecting screen monitor Power State change in c++

I have a Windows mes开发者_如何转开发sage loop. I need to detect when the screen powers back up. Is there a windows message?

detect power state change contains the C# way, I need the C++ way, using win32 API.

If there isn't a Windows message, how do I poll for screen monitor power state?

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There is a Windows message WM_POWERBROADCAST. There Windows API has a lot of support for power management. See the section on Windows Power Management at MSDN for the details.

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For newer windows versions (starting with windows 8) you should use GUID_CONSOLE_DISPLAY_STATE instead of GUID_MONITOR_POWER_ON