[Lazarus] LCL and custom keyboard layouts

[Mark Morgan Lloyd]

Over the last few weeks I've hacked together a partial APL 
implementation, for use as a way of specifying lists of numbers etc. 
when passing commands between computers implementing a large distributed 
system. For test purposes I've compiled it on Linux as a command-line 
app and am using FPC's keyboard unit to implement a layout similar to 
http://www.aplusdev.org/keyboard.html, with Alt as meta and Esc to go 
into composition mode (use cursor keys to move between the glyphs on 
each key). Internal storage is in widestrings, external files etc. UTF-8.

I now want to move the parser and evaluator into an LCL-based app, which 
will ideally allow at least partial editing of APL-style expressions 
rather than reading everything from configuration files.

What is the situation with LCL editing components, Synedit, Cmdline and 
so on? Is there a single underlying keyboard component, or at least a 
uniform interface?

In short, where do I start? :-)

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]