Parts of this page show the use of the XPInstall API. The majority of this API is now deprecated and as of Gecko 1.9 no longer available. Extension, Theme, and plug-in developers must switch away from
install.js based packages to the new packaging scheme with an
install.rdf manifest. In particular plugin developers should see how to package a plugin as an extension.
Windows developers use this object to manipulate the content of the Windows registry.
This object does not have a public constructor. Instead, you construct an instance of this object by calling the
getWinRegistry method of the
This discussion assumes you are already familiar with the Windows Registry. For information on it, see API documentation for Windows NT or Windows 95.
When you construct a
WinReg object, it is set to operate with
HKEY_CLASSES_ROOT as its root key. To use a different root key, use the
Typically values in the Windows Registry are strings. To manipulate such values, use the
setValueString methods. To manipulate other values, use the
Reading registry values is immediate. However, writing to the registry is delayed until
performInstall is called.