XP SP2 and HTCs in webbrowser control

I have an HTC (derived from the MS "expand" HTC) that is invoked from a web
page loaded into an MFC CHtmlView (WBC wrapper).

The page that attempts to load the HTC is generated by loading "about:blank"
into the WBC and then using IHTMLDocument2->write()/IHTMLDocument2->close()
to rewrite the source page. Both the HTML page and the HTC have a "mark of
the web" <!-- saved from url=(0014)about:internet -->".

If I write the HTML page to disk and then use Navigate2() to load it from
the file: URL, it loads and executes the Javascript in the HTC. If I DON'T
write to disk/read from disk into the WBC, I get:

Error: "Access is denied to file://<path to HTC file>
Code: 0
URL: about:blank

Any ideas on how to avoid this error and get the external HTC to load and
execute without writing the page referencing the HTC to the filesystem?

- jwallison



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