Re: Newbie: Object Instantiation

timmy wrote:

> Hello folks,
>
> Is it true, that objects of classes used in the XPCom- environment are
> always created when a JS-function is called? Or is there the
> possibility to have a singleton-instance of some specific classes,
> that are instantiated on startup? How do I manage this? I need a
> 'listener' on the application-side, that recognizes events on the GUI
> (XUL). This listener should be a singleton.
>
> Thanx for your support,
> Timmy


no, many objects are created without a JS-function being involved.

Your object's factory can ensure that the object is a singleton.

To have your object be created at startup, you can add object as a 
category similar to this:

http://lxr.mozilla.org/seamonkey/source/mailnews/mapi/mapihook/src/msgMapiSupport.cpp#91

Although, I am not sure that this approach is sure to work in the future.

Doug Turner
[email protected]