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Turn off screensavers. Note that this won't work on Vista+ when there…
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…'s a password.
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@hrydgard
hrydgard committed May 2, 2013
1 parent 51493ab commit 0ccebac
Showing 1 changed file with 15 additions and 0 deletions.
15 changes: 15 additions & 0 deletions Windows/WndMainWindow.cpp
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Expand Up @@ -746,6 +746,21 @@ namespace MainWindow
UpdateMenus();
break;

// Turn off the screensaver.
// Note that if there's a screensaver password, this simple method
// doesn't work on Vista or higher.
case WM_SYSCOMMAND:
{
switch (wParam)
{
case SC_SCREENSAVE:
return 0;
case SC_MONITORPOWER:
return 0;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}

default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
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2 comments on commit 0ccebac

@PeterTh
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@PeterTh PeterTh commented on 0ccebac May 2, 2013

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I have code somewhere to disable the screen saver and sleep (also on Vista and higher when there is a password) ...

Right, here it is:

class KeepDisplayOn {
    UINT prevScreenSaver;
    EXECUTION_STATE prevExecState;
public:
    KeepDisplayOn() {
        prevExecState = SetThreadExecutionState(ES_DISPLAY_REQUIRED | ES_SYSTEM_REQUIRED | ES_CONTINUOUS);
        SystemParametersInfo(SPI_GETSCREENSAVETIMEOUT, 0, &prevScreenSaver, 0);
        SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, FALSE, NULL, 0);
    }

    ~KeepDisplayOn() {
        SystemParametersInfo(SPI_SETSCREENSAVETIMEOUT, prevScreenSaver, NULL, 0);
        SetThreadExecutionState(prevExecState);
    }
};

You just put one instance of that on the stack in main -- at least that's what I do in another project. The SystemParametersInfo stuff is somewhat bad practice, but I don't know of a reliable method which is good practice -- you'd expect SetThreadExecutionState(ES_DISPLAY_REQUIRED ...) to disable the screensaver, but it doesn't, it only disables turning off the screen for power saving.

@shinra358
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The bogus mouse event option in this program keeps the screensaver off, laptop screen dimming off, and hibernation off when you have a password on. Maybe you can check the source code to see how to implement.

http://code.google.com/p/magical-tools/downloads/detail?name=Insomnia%20r116.zip&can=2&q=

It is also implemented in this plugin when prevent screensaver is checked:

http://code.google.com/p/magical-tools/downloads/detail?name=Pokopom%20r127.zip&can=2&q=

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