XPCOM

Welcome to the XPCOM page. This area is intended to be a central clearinghouse for information related to XPCOM. Currently, XPCOM documentation is spread all over mozilla.org. Hopefully, it will migrate (or we'll link to it from) here.

Topics of Interest

• Modularization Techniques describes XPCOM and how to use it.
• Some COM Ownership Guidelines gives a brief set of guidelines to help you build a supportable ownership model.
• nsCOMPtr User Manual describes a `smart-pointer' class for XPCOM. Check out The nsCOMPtr Home Page for more documentation.
• nsString Proposal proposes a string class for XPCOM.
• XPConnect describes how XPCOM based classes can be accessed through JavaScript.
• XPIDL describes the XP Interface Description Language used to specify XPCOM interface classes.
• mozIRegistry describes the "registry" interface and how you can use it to dynamically bind to interface implementations
• Generic Factories reference document for Generic Factories.
• A Reference Implementation of QueryInterface shows one good way to implement QueryInterface().
• nsISupport Proxies describes work in progress on thread-crossing XPCOM proxies.

See Also

• The nsCOMPtr Home Page.
• C++ portability guide