Program Description
SimpleMonitorOff is a Windows application which powers off your screen (or screens) when you lock your computer.
When you lock your computer (eg. with Win+L) then ordinarily your screen(s) may not power off. SimpleMonitorOff detects that you have locked your computer, and broadcasts a message to Windows requesting that the screen(s) be powered down. Shortly afterwards your screen(s) will power down (ie. go into standby mode).
When you move your mouse or hit a key, they will wake again to let you unlock the computer. If you (or your cat) did that by accident, then after a little while your screen(s) will power down again.
Note: Unlike many similar applications, SimpleMonitorOff does not require any additional hotkeys, mouse clicks, or shortcuts - it responds to events sent by Windows itself, so will respond to you locking your computer however you choose to do it, rather than expecting a specific hotkey combination or shortcut.