AutoHotkey Community

Pause/Break
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Welcome to hell. If you press this key while either of the the control keys
are being held down, it will behave like extended key 70, at all other times
it will send the following bytes: (225, 29, 69, 225, 157, 197). Holding the
key down does not result in autorepeat. Taking your finger off the key does
not send any extra bytes, they appear to be sent after the "key down" bytes
when you first press the key. Notice that 225 isn't 224, so our normal
extended character handler will not take care of this. My personal theory is
that while a scan code of 224 (E0h) means there is 1 more character
following, a scan code of 225 (E1h) means there are *2* more following. I've
seen a number of keyboard handler libraries and they all seem to overlook
this key. So why not be the first kid on your block to have a keyboard
handler which properly supports the Pause/Break key? CHECK IT OUT!!

Footnote 1) Actually, the "Pause/Break" key does not have a break code in scan code sets one and two. When this key is pressed, its make code is sent; when it's released, it doesn't send anything. So how do you tell when this key has been released? You can't.