Prevent monitor from powering on

Posted by concretemixer on Stack Overflow See other posts from Stack Overflow or by concretemixer
Published on 2010-05-31T04:42:03Z Indexed on 2010/05/31 6:02 UTC
Read the original article Hit count: 148

Filed under:

c++

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winapi

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windows-7

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windows-vista

I'm turning off the monitor using SendMessage(HWND_BROUADCART, WM_SYSCOMMAND, SC_MONITORRPOWER, 2).

That works, but the monitor turns back on when someone touches the keyboard or mouse. I tried to get rid of this using the DevicePowerSetDeviceState function with DEVICEPOWER_CLEAR_WAKEENABLED for the keyboard and mouse: it returns no error, but has no effect either.

How can I prevent the monitor from powering back on in Vista and Windows7?

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