idle: Control a background/idle function
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Usage Arguments Value Note Author(s) See Also

DEPRECATED!! (compatibility wrappers for RGtk 1!)

These functions allow one to register and remove a function that is called whenever Gtk has nothing else to do. In other words, these are background tasks that have less priority than timers and user interface events.

1 2	gtkAddIdle(f, data=NULL) gtkRemoveIdle(id)

`f`	the function should take one or zero arguments depending on whether the argument `data` is given. The function should return a logical value. If it returns `FALSE`, the timer is removed. If it returns `TRUE`, the timer is re-registered and will be called after `interval` milliseconds.
`data`	a value, which if specified, will be passed to the function `f` when it is invoked. This can be used to parameterize the function to have different functions. The same effect can be obtained using closures.
`id`	the object identifying the idle function in Gtk that was returned by a call to `gtkAddTimeout`.

gtkAddTimeout returns an object of class "GtkIdleId". This is an integer giving the identifier returned by the low-level Gtk interface.

THIS STUFF IS VERY OLD AND DEPRECATED (compatibility wrappers for RGtk 1)

This does not currently work when running directly in R. However, when running R inside another application such as GGobi, Gnumeric, etc. it and other event-loop facilities will work.

Duncan Temple Lang <duncan@research.bell-labs.com>

gtkAddTimeout gtkRemoveTimeout gtkAddCallback

RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.