Basic progress bar widget
S3 generic whose methods are implemented in the toolkit packages
gprogressbar(value = 10, container = NULL, ..., toolkit = guiToolkit()).gprogressbar(toolkit, value, container, ...)
Initial value, between 0 and 100. A value of NULL will make pulsing bar with indeterminate state. For some toolkits, this must be called periodically to pulse the bar.
A parent container. When a widget is created it can be incorporated into the widget heirarchy by passing in a parent container at construction time. (For some toolkits this is not optional, e.g. gWidgets2tcltk or gWidgets2WWW2.)
These values are passed to the add method of the
parent container. Examples of values are expand,
fill, and anchor, although they're not always
supported by a given widget. For more details see add.
Occasionally the variable arguments feature has been used to sneak
in hidden arguments to toolkit implementations. For example, when
using a widget as a menubar object one can specify a parent
argument to pass in parent information, similar to how the
argument is used with gaction and the dialogs.
Each widget constructor is passed in the toolkit it
will use. This is typically done using the default, which will
lookup the toolkit through guiToolkit.
a GButton instance. While this object has its own
(reference) methods, one primarily interacts with it through S3
methods defined within the package.
# NOT RUN {
w <- gwindow("progress bar example")
pb <- gprogressbar(cont=w)
for(i in 10:100) {Sys.sleep(.1); svalue(pb) <- i}
# }
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