Implementing an IE plugin for streaming PDF files

Question

Hello support,

The task I am trying  to solve is writing a PDF plugin for IE (that means when I browse to a PDF file/stream I should be able to access that file, download it and display it)

By implementing InitNew of the IPersistStreamInitImpl I was able to access the URL, and than start a custom download process based on that URL, using URLDownloadToFile API from urlmon.dll . Though, sometime I am running into problems especially when the pdf comes as a stream from a database.

Here is the code for getting the URL

 

STDMETHOD(InitNew)()

{

MessageBox("STDMETHOD(InitNew)", "", MB_OK);

// Obtain moniker from client site and render it to a URL string

LPMONIKER pimkName;

m_spClientSite->GetMoniker(OLEGETMONIKER_FORCEASSIGN, OLEWHICHMK_CONTAINER, &pimkName);

LPBINDCTX pibc;

CreateBindCtx(0, &pibc);

return LoadFromMoniker(pimkName, pibc); // here I get the URL

}

 

Now my question is :

How can I avoid implementing a separate download mechanism and stream directly the PDF? Is there interface I have to implement? I read about IBindHost and  IBindStatusCallback though I didn't find a helpful  example for downloading that pdf stream to a file on disk.

 

Thank you,

Cristian

Answer 1

Hi Cristian,
 
According to your description, I’d like to move this thread to the "Internet Explorer Extension Development" forum for better support where more experts live.
 
Thanks for your understanding.
Best regards,

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Helen Zhao [MSFT]
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