The key code table

This table lists internal key codes. Avoid hard-coding these numbers in your sources; otherwise the source will not be compatible with future versions of the language.

Always use the fgl_keyval() function instead.

Table 1. Internal key codes
Value	Key name	Description
`1 to 26`	`CONTROL-letter`	Control key, where `letter` is the any letter from A to Z. For example, the key code corresponding to CONTROL-B is 2.
`13`	`RETURN`	The enter physical key.
`27`	`ESC` or `ESCAPE`	The escape physical key. In TUI mode this key is used to accept a dialog.
`others < 256`	`ASCII chars`	Other codes correspond to the ASCII characters set.
`2000`	`UP`	The up-arrow physical key.
`2001`	`DOWN`	The down-arrow physical key.
`2002`	`LEFT`	The left-arrow physical key.
`2003`	`RIGHT`	The right-arrow physical key.
`2005`	`NEXT` or `NEXTPAGE`	The next-page physical key.
`2006`	`PREVIOUS` or `PREVPAGE`	The previous-page physical key.
`2008`	`HELP`	The help logical key.
`2011`	`INTERRUPT`	The interrupt logical key.
`2014`	`INSERT`	The insert row logical key.
`2015`	`DELETE`	The delete row logical key.
`2016`	`ACCEPT`	The accept logical key.
`2017`	`BACKSPACE`	The backspace physical key.
`2020`	`HOME`	The home physical key.
`2021`	`END`	The end physical key.
`3000 to 3255`	`Fx`	Function key, where `x` is the number of the function key. The key code corresponding to a function key F`x` is 3000+`x`-1, for example, 3011 corresponds to F12.