This page describes the format and contents of each reference page in Section 3, which covers the each of the Intrinsics widget types.

NAME

Widget − a brief description of the widget. 

SYNOPSIS

Public Headers:The files to include when you use this widget. 

Private Header:The files to include when you subclass this widget. 

Class Name:The name of the widget class; used as the resource class for each instance of the widget. 

Class Hierarchy:The superclasses of this widget, listed in superclass-to-subclass order.  The arrow symbol (→) indicates a subclass. 

Class Pointer:The global variable that points to the widget class structure.  This is the value used when creating a widget. 

Instantiation:C code that instantiates the widget, for widgets that can be instantiated. 

Functions/Macros:Functions and/or macros specific to this widget class. 

AVAILABILITY

This section appears for widget classes that were added in Release 4.  None were added in Release 5. 

DESCRIPTION

This section gives an overview of the widget class and the functionality it provides. 

NEW RESOURCES

This section lists, in tabular form, the name, class, type, and default for each new resorurce defined by this widget, and also provides a paragraph describing each new resource.  The table in this section also has a fifth column, labeled "Access," which explains when the resource can be set and queried.  If the letter C appears in this column, the resource can be set when the widget is created.  If the letter S appears in the column, the resource may be set with XtSetValues().  If the letter G appears, the resource value may be queried with XtGetValues(). 

INHERITED RESOURCES

This section lists, in tabular form, each of the resoruces inherited by this widget class, along with the superclass from which they are inherited. 

CLASS STRUCTURE

This section shows the class part structure and class structure for the widget class, and provides a paragraph describing each field of the class part structure and how it should be initialized. 

EXTENSION STRUCTURE

This section, if present, shows any extension structures that have been defined for the widget class, and explains how the fields of the structure should be initialized. 

INSTANCE STRUCTURE

This section shows the widget instance structure for the widget class.  The Xt specification does not require that the fields be in the order shown, and it allows implementations to add other fields to the instance structure. 

SEE ALSO

This section refers you to related functions, prototype procedures, Intrinsics widget classes, or widget methods.  The numbers in parenthesis following each reference refer to the sections of this book in which they are found.