- value
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.
- container
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.
- toolkit
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
.