key_keycode(+Displayable, ?Key, ?Keycode, ?Index) key_keycode(?Key, ?Keycode, ?Index)
Translates between keys and keycodes.
Under X11, physical keys are mapped to unique server-dependent keycodes and keycodes are mapped to a list of server-independent keysyms.
Displayable is a ProXL Displayable. If omitted, the default Display is used.
Key is a key name, as given by
Keycode is an integer, between
255, corresponding to
Index is an integer, typically
1, that identifies
which of the keysyms attached to Keycode corresponds to
Key. The usual case is that Keysym number
0 corresponds to
the lower case variant of the key, and Keysym number
1 to the upper case
variant, if it exists.