Is there anyway to disable the mouse or lock the screen and display a fullscreen image while it’s locked?
Disable the mouse (hide it anyway) requires XTool.osax. The instruction in its dictionary is temp hide mouse, but it reappears if the cursor is moved. The best way to disable a mouse is to unplug it, or if it’s a Bluetooth mouse, turn off Bluetooth.
I think if you search, you’ll find something about full screen mode - I don’t recall where I saw it.