How to make application disable/invoke the current screen-saver

Question:
I have a small application that monitors Windows’ resources GDI and users as well as controlling Windows’ exit/restart/reboot. I would like it to be able to disable/invoke the current screen-saver as well. I can’t find anything in the Windows SDK to help me.

Answer:
The API function to enable and disable the screen-saver underWindows is SystemParametersInfo, a function responsible for getting and setting most of the control panel settings such as double-click speed, mouse trails, screensaver timeout, icon title wrap and screen-saver active.

The format of the command is as follows:

BOOL SystemParametersInfo(      UINT uiAction, // system parameter to query or set      UINT uiParam,  // depends on action to be taken      PVOID pvParam, // depends on action to be taken      UINT fWinIni   // user profile update flag     ); 
You will need to use the SPI_GETSCREENSAVEACTIVE action, which is decimal16, to get the current setting, and SPI_SETSCREENSAVEACTIVE action, whichis decimal 17. The uiParam should be set to the value TRUE/FALSE for the newsetting, and a Boolean passed by reference in pvParam to receive thecurrent setting.

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