gtkAddTimeout {RGtk2} | R Documentation |
DEPRECATED!! (compatibility wrappers for RGtk 1!)
These functions allow one to register and remove a function that is called periodically at a fixed interval.
gtkAddTimeout(interval, f, data=NULL) gtkRemoveTimeout(id)
interval |
the number of milliseconds to wait before invoking the call. |
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 timer function in Gtk
that was returned by a call to gtkAddTimeout . |
gtkAddTimeout
returns an object
of class "GtkTimeoutId"
.
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.
If one wanted to reset the timeout but with a different
interval, one should register a new timeout within the
function and return FALSE
.
Duncan Temple Lang <duncan@research.bell-labs.com>
gtkAddIdle
gtkRemoveIdle
gtkAddCallback