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THE PROBLEM: I want to download a file from the Internet and display a progress bar
during the download.
THE SOLUTION: Call
URLMonLibrary>>urlOpenBlockingStream: szURL: ppStream: dwReserved: lpfnCB:
passing an instance of "IBindStatusCallback" as the lpfnCB argument. As the file is
being downloaded, the "IBindStatusCallback::OnProgress" method will be called
with status info. Hook up this method up to the progress bar view.
THE PUZZLE: I need to create a IBindStatusCallback class. This will be a subclass
of IUnknown. I believe that this COM interface class can be generated using the
Dolphin ActiveX Component wizard. However, I get an error when I try to do so
with the Urlmon.dll file. Anyone know how to get the ActiveX wizard to generate
the class? Thanks.
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