gtimer: Basic timer widget

In gWidgets2: Rewrite of gWidgets API for Simplified GUI Construction

Description

Calls FUN every ms/1000 seconds. A timer is stopped through its stop_timer method which is called using OO style: obj$stop_timer().

Usage

gtimer(
  ms,
  FUN,
  data = NULL,
  one.shot = FALSE,
  start = TRUE,
  toolkit = guiToolkit()
)

.gtimer(toolkit, ms, FUN, data = NULL, one.shot = FALSE, start = TRUE)

Arguments

ms	interval in milliseconds
FUN	FUnction to call. Has one argument, data passed in
data	passed to function
one.shot	logical. If TRUE, called just once, else repeats
start	logical. If FALSE, started by start_timer OO method. (Call obj$start_time()).
toolkit	gui toolkit to dispatch into

Examples

## Not run: 
i <- 0
FUN <- function(data) {i <<- i + 1; if(i > 10) a$stop_timer(); print(i)}
a <- gtimer(1000, FUN)
##
## a one shot timer is run only once
FUN <- function(data) message("Okay, I can breathe now")
hold_breath <- gtimer(1000*60, FUN, one.shot=TRUE)

## End(Not run)

gWidgets2 documentation built on Jan. 11, 2022, 1:07 a.m.