Programming a "Send to" app

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Bob Altman - 17 Oct 2006 18:02 GMT

If I put a shortcut to an app in the Send To folder, then I can select one
or more files in Windows Explorer, right-click on the files, select Send
to -> MyApp, and my application will run with the selected file paths
supplied as a command line argument. The problem with this is that the
command line has a limited length. I can only select 15 or so files to send
to my app without truncating the command line.

I've noticed that many of the "built in" items in the Send To folder accept
an (apparently) unlimited number of selected files. What is the mechanism
that they use to get the selected file list, and can I write a .Net app that
does the same thing?

TIA - Bob

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Gabriele G. Ponti - 17 Oct 2006 18:17 GMT

They're written as Shell Extensions, usually in C/C++ since you have to deal
with COM.

Take a look at this product, it may be useful:
http://www.ssware.com/ezshell/ezshell.htm

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Walter Wang [MSFT] - 18 Oct 2006 08:40 GMT

Hi Bob,

Like Gabriele said, those are Shell Extensions that you can find an example
here:

http://www.codeproject.com/shell/ShellExtGuide6.asp

Please let me know if you need more information on this topic.

Sincerely,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Bob Altman - 18 Oct 2006 20:11 GMT

Thanks all. That was a great help!

- Bob

> Hi Bob,
>
[quoted text clipped - 33 lines]
> This posting is provided "AS IS" with no warranties, and confers no
> rights.

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Programming a "Send to" app

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