Function pancurses::keyname

pub fn keyname(code: i32) -> Option<String>

Returns a character string corresponding to the key code.

• Printable characters are displayed as themselves, e.g., a one-character string containing the key.
• Control characters are displayed in the ^X notation.
• DEL (character 127) is displayed as ^?.
• Values above 128 are either meta characters (if the screen has not been initialized, or if meta has been called with a TRUE parameter), shown in the M-X notation, or are displayed as themselves. In the latter case, the values may not be printable; this follows the X/Open specification.
• Values above 256 may be the names of the names of function keys.
• Otherwise (if there is no corresponding name) the function returns None, to denote an error. X/Open also lists an "UNKNOWN KEY" return value, which some implementations return rather than None.