getkpl {cursr} | R Documentation |
Maintain a loop that listens for a keypress, then applies the keypress to a function or echoes it to the terminal screen. The user must be in a terminal to use getkp
; it will not work in RStudio or the R GUI. All actions within R are halted until the keypress is returned.
getkpl(escape = "escape", fn = list(), echo = FALSE)
escape |
vector of character keypresses that escape the loop. The default is "escape" key. |
fn |
list of named functions |
echo |
whether the keypress should be echoed to the screen if not found in list |
NULL
f <- list(
'up' = function(){mv(row=-1)},
'down' = function(){mv(row=-1)},
'left' = function(){mv(col=-1)},
'right' = function(){mv(col=1)}
)
## Not run:
getkpl(escape = c("escape", "enter"), fn=f, echo=FALSE)
## End(Not run)