= Using HTML =

You can also generate graphics using HTML.
'''Note: this works for graphics windows created using the Manager's Show Graphics button;
it doesn't provide a screensaver.'''

In this case your main program supplies a URL that supplies the HTML.
This may be an external URL, or it may refer to a web server embedded in your main program
(i.e. a URL of the form '''http://localhost:port''').
Your main program can call
{{{
boinc_web_graphics_url(char* url)
}}}
to register a URL to be used for graphics;
in this case, the BOINC Manager's '''Show Graphics''' button will
open a Web browser window to this URL.