is_key/[2,3]

     is_key(?Type, +Key, -Keysym)
     is_key(?Type, +Key)
     

Identify various subclasses of keys and their keysyms.

Type is one of:

keypad

For keypad keys.

cursor

For cursor control keys.

pf

For pf keys.

function

For function keys.

misc_function

For various other function keys.

modifier

For modifier keys.

Key is the key name.

Keysym is the integer, server-independent, keysym.