INFO: The "About:" Protocol in Internet Explorer (183978)
The information in this article applies to:
- Microsoft Internet Explorer (Programming) 4.0
- Microsoft Internet Explorer (Programming) 4.01
- Microsoft Internet Explorer (Programming) 5
- Microsoft Internet Explorer (Programming) 5.5
This article was previously published under Q183978 SUMMARY
Internet Explorer 4.0 supports a number of special protocol schemes.
One of these is the "about:" protocol, which is used to display descriptive
HTML pages for various predefined "about:" strings.
For example, "about:NavigationFailure" directs Internet Explorer to display
a brief page with more information about why a navigation might have failed
and helpful hints for avoiding this error in the future.
Microsoft now supports an about: protocol that works as follows. If you
enter a URL "about:example", MSHTML (the HTML parsing and rendering engine
for Internet Explorer 4) looks in the registry under "HKML\SOFTWARE\Microsoft\Internet
Explorer\AboutURLs" for an string value named "example" and then loads the
URL associated with it. If it cannot find the value "example," it generates
and displays a page "<HTML>example</HTML>."
REFERENCES
Internet Client SDK: Internet Tools & Technologies; Predefined Protocols
Modification Type: | Major | Last Reviewed: | 5/12/2003 |
---|
Keywords: | kbinfo KB183978 |
---|
|