MacBooks with Scissor-Switch Keyboards – February 2020 Update

Are there alternate keyboard shortcuts for ending a screen sharing session? The menu bar lists ^ ⎋ for achieving this (⎋ is the power button on your computer). However, I'm stuck in a really annoying middle ground.

Actually, the symbol that you're referring to references the "Esc" key.

So, by pressing ^ ⎋ (Control-Esc) you can end the Screen Sharing session without asking for control of the mouse.

Here's what I put in my private.xml file (using Karabiner.app), and it allows the following functionality:

Use a generic external numerical keypad with Mac OS X, and Num Lock on/off toggles number vs arrow/Home/End/PgUp/PgDn functionality. Num Lock light turns on/off as appropriate as well :-)

<?xml version="1.0"?>
<root>
    <item>
        <name>Toggle Numbers/Arrows</name>
        <identifier>private.toggle_numbers_arrows</identifier>
        <autogen>
            __KeyToKey__ KeyCode::KEYPAD_CLEAR, 
            KeyCode::VK_CONFIG_TOGGLE_remap_keypadnumlock, 
            KeyCode::VK_IOHIKEYBOARD_TOGGLE_NUMLOCK,
            KeyCode::VK_IOHIKEYBOARD_TOGGLE_NUMLOCK,
            KeyCode::VK_IOHIKEYBOARD_TOGGLE_NUMLOCK
        </autogen>
    </item>
</root>

As you can see, I needed to include the "...TOGGLE_NUMLOCK" three times to get the Num Lock LED status to appropriately indicate the state (otherwise it was backwards, whereas it would be lit for arrow functions and dark for numbers). Maybe there's a simple way to fix it, but the hack works perfectly for me. Hopefully someone else finds this useful!