What's Changed in IE3.0/ActiveX since the 3/12 PDC Conference

Since the PDC conference, much new functionality and new features have been added to IE3.0 and to the Win32 implementation of the ActiveX Internet Client platform. Below is a brief summary of the most important changes that should affect HTML authors and developers of ActiveX Controls and ActiveX Documents.

ActiveX Control Hosting

The HTML Standard <OBJECT> tag syntax has been changed by the W3C. Specifically, the format for the "CLASSID" attribute has changed, and the "CODE" attribute has been renamed to "CODEBASE". Correct syntax should look like the following:
```
    <OBJECT
        classid="clsid:99B42120-6EC7-11CF-A6C7-00AA00A47DD2"
        CODEBASE="http://foo/bar/myoc.ocx#ver=4,70,0,1062"
    >
```
The IBindHost interface has been changed significantly, although controls will have minimum code change to migrate to the new interface. For details on the change, see the document on The New IBindHost.
Relative URLs are now handled correctly in the <OBJECT> tag.

Scripting

The syntax for inserting VBScript scripts has changed. Instead of
```
    <SCRIPT LANGUAGE="VBS">
```
you should now use
```
    <SCRIPT LANGUAGE="VBSCRIPT">
```
Scripting now supports dynamic addition of properties to objects in the object model.
The Internet Explorer Object Model (the automation model for the WebBrowserOC) has changed.
The ActiveX Scripting interface for hosting pluggable script interpreters has changed.
IE3.0 now distinguishes controls that are "safe for scripting", thus preventing running of malicious scripts against controls that aren't "safe for scripting".
IE3.0 now implements much more of the JavaScript compatible object model from within HTML pages. See the documentation for details.

URL Moniker

Some interface changes have been made to URL Monikers in response to customer feedback. Existing clients must recompile URL Moniker client code to continue to work with the new interfaces. Additional details are available in the document What's Changed in URL Monikers. This document provides an outline of what has changed since 3/12, and it also provides a preliminary description of an 80% solution for defining new URL protocols.

Windows Internet API (WinInet)

Added common URL parsing functionality
Added SSL3.0 support and many many other security features
Added support for dynamic changing of proxy servers

Internet Component Download

"CODE" attribute in <OBJECT> has been renamed "CODEBASE"
Added Internet Search Path functionality
Added support for "GetLatest" - querying for the newest version of a control to always download the latest version.