Bull DPX/20 Guia do Utilizador Página 5

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iii
Preface
About This Book
This book gives reference material for the System Object Model (SOM) of the
SOMobjects Base Toolkit. In particular, it contains a reference page for every class,
method, function, and macro provided by the SOM run-time library, the DSOM run-time
library, the Interface Repository Framework, and the Event Management Framework. It also
includes documentation of the utility metaclasses provided by the SOMobjects Base Toolkit,
and each of their methods.
Also, the SOMobjects Base Toolkit Quick Reference Guide shows the syntax and purpose
for each entry of the current book, plus SOM Compiler commands/flags. In addition, refer to
the SOMobjects Base Toolkit Users Guide for introductory information.
Who Should Use This Book
This book is for the professional programmer using the SOMobjects Base Toolkit to build
object-oriented class libraries or application programs that use SOM class libraries or the
frameworks in the SOMobjects Base Toolkit.
This book assumes that you are an experienced programmer and that you have a general
familiarity with the basic notions of object-oriented programming. Practical experience using
an object-oriented programming language is helpful, but not essential.
How This Book Is Organized
At the highest level, this book is organized by framework. Within each framework, the
reference pages describe the classes in alphabetical order, with the methods of each class
given in alphabetical order following their corresponding class. Similarly, related functions
and SOM macros are given in separate alphabetical sequences in the corresponding
section. The reference page for a SOM class contains the following topics:
Description A description of the class.
File Stem The file stem for the class’s IDL interface specification (.idl) file and its
usage binding (.h/.xh) files.
Base Class The class’s direct base (parent) classes.
Ancestor Classes
The class’s ancestor (indirect base) classes.
Metaclass The class’s metaclass.
New Methods The names of the methods that the class introduces (grouped roughly
according to purpose). Each new method is documented on a separate
reference page.
Overriding Methods
The names of the methods that the class overrides from ancestor classes
The reference page for a method of a SOM class contains the following topics:
Purpose The purpose of the method in brief.
Syntax The method’s C/C++ procedure prototype (which includes the method
procedure’s return type and the names and types of its parameters). The
in/out/inout keywords associated with each of the method’s parameters in
the method’s IDL declaration are also shown. These keywords are shown
for information only; they are not actually present in the method procedure
prototype.
Description A description of the method’s use.
Parameters A description of each of the method procedure’s parameters.
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