[Metacard] Desktop Drag&Drop files

[xbury.cs at clearstream.com]

Environment variables can be had by reading the registry in some cases or
answer shell("echo %path%")

cheers
Xavier

> -----Original Message-----
> From: Ben Rubinstein [mailto:benr_mc at cogapp.com]
> Sent: mercredi 28 novembre 2001 13:45
> To: metacard at lists.runrev.com
> Subject: Re: [Metacard] Desktop Drag&Drop files
> 
> 
> on 27/11/01 6:09 AM, Alex Shaw at A.Shaw at mailbox.gu.edu.au wrote:
> 
> > -Simple executable app (or its alias/shortcut) which sits 
> on the desktop.
> > -User can drag & drop random files onto the app.
> > -App processes files.
> > 
> > I can easily access the list thru the environment variable 
> names $0 $1 $2
> > etc on the pc but the same app on the mac returns empty 
> variables & will
> > only allow me to drop metacard files onto it.
> > 
> > Someone mentioned appleevents.. but how?
> 
> Alex,
> 
> I'll swap you Mac for Windows.
> 
> To do this on the Mac, your stack needs to handle the 
> "appleEvent" message.
> 
> Put the following handler in your stack script:
> 
>     on appleEvent eClass, eID, eSender
>        if eClass = "odoc" then
>           request appleEvent data
>           if the result = empty then
>              answer "OpenDoc AppleEvent!" & return \
>                 & "id =" && eID \
>                 & "sender =" && eSender \
>                 & "data =" && it
>           else
>              pass appleEvent
>           end if
>        else
>           pass appleEvent
>        end if
>     end appleEvent
> 
> Build a standalone, and try it.  You should see that when you 
> drag and drop
> a file, this handler fires, and the data for the apple event 
> is the path of
> the file(s).
> 
> The issue about which files you can drag-and-drop onto your app is
> determined by the resources in the app.  When the standalone 
> is built, it is
> given the same resources as MetaCard itself - so it accepts 
> stacks.   You
> need to change these resources to identify the kind of files 
> your app should
> accept.  The resources in question are the file reference 
> ('FREF'), icon
> list ('ICN#') and bundle ('BNDL') resources.  You should be 
> able to get
> information about these on the apple site 
> (developer.apple.com) (I'm on the
> road at the moment, with email access only - can't give you exact
> referencess.)  You'll need a resource editor - ResEdit or 
> Resorceror.  Note
> that you can only filter by Mac type codes, not by file extensions.
> 
> Now: can you tell me how I do this on Windows?!?  I can't 
> even find out how
> to access the environment variables.
> 
> Hope this helps & thanks in advance,
>  
>   Ben Rubinstein               |  Email: benr_mc at cogapp.com
>   Cognitive Applications Ltd   |  Phone: +44 (0)1273-821600
>   http://www.cogapp.com        |  Fax  : +44 (0)1273-728866
> 
> 
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> metacard mailing list
> metacard at lists.runrev.com
> http://lists.runrev.com/mailman/listinfo/metacard
> 


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