'Break and ALT keys' for Lapdock

Can someone remind me what key(s) to press on a Lapdock to input what the break and ALT does on an ‘ordinary’ RISC OS computer? I need this to do what would normally be an ALT break or CTRL break on RISC OS.

You can do ALT DEL or CTRL DEL. You’ll need to press FN to get DEL.

The Lapdock’s keyboard has an Alt key but no Break key, so to do an Alt-Break you need to assign some existing but less used key to emulate Break. One way to do this is by means of the module KeyMapper by James Peacock from here, as discussed a year ago in this forum.

Install module KeyMapper in, say, !Boot.Resources.!System.350.Modules and include a command such as *KeyMap 11 15 in, say, the Misc section of !Boot.Choices.Boot.PreDesktop, then after each reboot F11 (Fn and hyphen keys) will be Break instead of the usual F11, and this can be combined with Alt for when you want to interrupt the current task.

11 and 15 are the low-level codes for F11 and Break respectively. If you want to assign 15 to some other key than 11, choose from this list.

To implement David F’s suggestion of using Alt-Del, the command to use would be *KeyMap 52 15.

@Bernard
I have just got round to trying this and your suggestion didn’t work. The bootup stopped after entering the desktop with error something like “KeyMap file not found”. This is on a Raspberry-Pi B+ running RISC OS version 5.23. I had to switch off the power supply and reboot holding shift key down so that I could delete the entry in PreDesktop; but holding the shift key down was ignored. :-(( Presumably, that needs mapping as well, a vicious circle! It’s a good job I have another RISC OS computer and a card reader.

KeyMap file not found

The KeyMapper module does need to be RMLoad’d first!

https://www.riscosopen.org/wiki/documentation/show/Welcome%20to%20RISC%20OS%20Pi see “Keyboard Support”.