Help with setRegistry?

Ken Ray kray at
Wed Jul 24 16:15:01 EDT 2002

OK, here's what you do. For the purposes of this example, I will assume a
fictitious app called "TestApp", with a file extension of ".tst" and an
installed location of "C:\Program Files\TestApp\TestApp.exe".

1) Create a key in HKEY_CLASSES_ROOT for the extension, and use the default
value to point to the name of the application:

   get setRegistry("HKEY_CLASSES_ROOT\.tst\","TestApp")

2) Create a key in HKCR for the application itself, using the default value
to point to a descriptor of the kind of document used by the app - this will
be used in list views to show the kind of file a document of TestApp is:

   get setRegistry("HKEY_CLASSES_ROOT\TestApp\","TestApp document")

3) Create a subkey of HKCR\TestApp to hold the default icon for the
application. The value used is the path to the application followed by a
comma, followed by the index of the icon resource inside the application.
MetaCard/Rev document icons are in the first position and I'll assume for
this example that I have used an icon editor to change the icon in the first
position of the TestApp executable:

   get setRegistry("HKEY_CLASSES_ROOT\TestApp\DefaultIcon\","C:\Program

4) Create a subkey three layers deep in HKCR\TestApp to hold the command to
open the application when the document with the ".tst" extension is
launched. The path to the document is defined in the registry as %1. Any
other info you want to pass to the application you can add to this line. The
nice thing about MC/Rev is that you can create all these keys at once in a
single command:

Files\TestApp\TestApp.exe %1")

OK, now you have all the registry settings. The next thing to do is add some
code to your app. When you launch an MC/Rev app, any command line
information is sent to the application and is retrievable via *environment
variables* numbered $0 on up. The $0 variable will always contain the path
to the application you just launched, and the $1 will contain the first
command-line parameter passed ($2 will be the second, etc.).

So some simple code for this is:

on openStack
  put $0 into theAppPath
  put $1 into theDocToOpen
  answer "The doc to open is: " & theDocToOpen
end openStack

(Note that you'll need to bundle in the answer dialog box to your standalone
or you'll never see the message. ;-)

That's it! The next time you create a document with a ".tst" extension, it
will take on the icon in the first position in the TestApp executable (the
document icon), and if you double-click it, it will launch TestApp and its
path will be passed to the standalone as $1.

Hope this clears things up... (and yes, I'll post this to my site in the
MC/Revolution Tips area)

Ken Ray
Sons of Thunder Software
Email: kray at
Web Site:

----- Original Message -----
From: "Eric Rivers" <erivers at>
To: <use-revolution at>
Sent: Wednesday, July 24, 2002 1:56 PM
Subject: Help with setRegistry?

> I currently have a Rev standalone that, when launched, prompts a user to
> select a data file that contains Internet connection information (server
> name, paths, etc.) that the standalone needs in order to run.  The
> information is stored in the file in the form of custom properties that
> standalone reads and stores in variables.  Here's part of what I have so
> far:
>   -- prompt for a key file to use
>   answer file "Select Key File:" with filter "RemoteShow Key files,*.rsk"
>   if it is not empty then
>     set the itemDelimiter to "."
>     if the last item of it is "rsk" then
>       put it into openKeyName
>     else
>       put it & ".rsk" into openKeyName
>     end if
>     -- set variables based on custom properties of key file
>     put the scriptServerKey of stack openKeyName into scriptServer
>     put the scriptServerPathKey of stack openKeyName into scriptServerPath
>     etc.
> I'd like to create a file association so that a user can optionally simply
> launch the data file and it will launch with the standalone and pass the
> location and name of the data file to the standalone, preventing it from
> prompting for a data file and using the information in the file that was
> launched.
> This is being developed on a Win98 system but ultimately will be a
> distributed app for Windows and Mac machines.  How can I use
> queryRegistry/setRegistry and/or fileType to create the file association
> pass the location and name of the associated file to the standalone app?
> In other words, how do I go about setting up a basic file association via
> the registry and how do I get the Rev standalone to recognize that it was
> launched with incoming parameters and access & use those parameters?
> Eric Rivers
> RPSystems
> _______________________________________________
> use-revolution mailing list
> use-revolution at

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