On Wed, Apr 8, 2015 at 5:17 PM, Bill Gray <pl...@projectpluto.com> wrote:


>    Incidentally,  you'll also see that in the Win32a version of 'curses.h',
> the return values are relative to KEY_OFFSET.  The reason for this is that
> PDCurses' "usual" values assume a non-wide version,  and they start at
> 0x100.  Try making a Unicode build,  and there will be collisions:  if you
> get,  say, 0x16B,  did your user hit KEY_MESSAGE,  or an 's with acute
> accent'?
>

Florian Gro├če-Coosmann wrote to me about this a while back. Here's what I
said then:

It's not necessary to relocate the key definitions in order to distinguish
the control keys from regular Unicode input. One must simply use get_wch()
instead of getch(), and check the return value (KEY_CODE_YES or OK), as
well as the character result (which is placed at the location given by the
parameter).

Alternatively, if you don't care about using standard curses wide-character
functions, you can continue using getch(), but check the PDCurses-specific
SP->key_code to determine whether or not the result is a "special" key.
However, I recommend get_wch().

These capabilities date to 2006, BTW.

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