How do I disable CTRL+W in Internet Explorer?

I never use CTRL+W to close all windows.

I don't ever want to use it.

When I press it by mistake it sometimes results in loss of whatever I've
been working on, with no warning, and no recovery.

Naturally, I want to disable this annoying shortcut.

How can I do this?

I've searched and cannot find anything that tells me how to do this (it even
took a while before I found a reference to the CTRL+W shortcut!).

Thanks in advance for any ideas.