Display to standby via SendMessage, 0x112, 0xF170, 2,, Program Manager

Apparently to can put a display in stand by with the script 'SendMessage, 0x112, 0xF170, 2,, Program Manager'. I have a system with multiple displays and I'd like to be able to set up keyboard shortcuts to put them to sleep individually. Is it possible to modify the code 'SendMessage, 0x112, 0xF170, 2,, Program Manager' so that it refers to specific displays? I don't know what either 0x112 nor 0xF170 means but maybe they can be changed to point to specific displays?

0x112: WM_SYSCOMMAND - List of Windows Messages
0xF170: SC_MONITORPOWER - WM_SYSCOMMAND message (Windows)
2: Power off

There is no way with this API to turn off a specific monitor.

What exactly are you trying to do?

Thanks!

I'd like to be able to use keyboard shortcuts to sleep and wake individual monitors. Alternatively keyboard shortcuts to toggle "extend desktop to this display" and "disable this display" in Display settings for specific monitors would also be okay.

I've found some apps and Autohotkey scripts to do this sort of thing but they cause windows to forget the relative display positions which then take a long time to put back in position.