gWidgets2: gtimer – R documentation

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gtimer

Basic timer widget

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().

S3 generic for dispatch

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

Rewrite of gWidgets API for Simplified GUI Construction

v1.0-8

GPL (>= 3)

Authors

John Verzani

Initial release