Researching XPIDL and IDL Technologies

Introduction

XPIDL stands for XP Interface Description Language. It is a specification for XPCOM which is a cross platform adapter description language. An adapter description language is used to describe an adapter which unrelated with its machine language. The description of the adapter can use specialized tools to handle automatoc generation of language that is unrelated to the adapter's specifications. Typically XPIDL is frequently used to generate C++ header files and typelib information.

Language

Interfaces

  An interface is declared with the interface keyword, and the simplest possible interface is  
 interface nsToolbar {
 };

To specify an interface's parent, follow the interface name with a colon and the parent name

interface nsIToolbar : nsIParent {
};