Re: Application Filetypes

In message <cea4aa964d.steve@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Steve Fryatt <news@xxxxxxxxxxxxxxxxxx> wrote:

> On 6 Aug, Gillian Bobbett wrote in message
> <4d961c7817gmbobbett@xxxxxxxxxxxx>:
>
> > In article <4d9603fc7fdfs@xxxxxxxxxxxxx>,
> > Dave Symes <dfs@xxxxxxxxxxxxx> wrote:
> > > So, a definitive list of RO filetypes... Does one exist?
> >
> > How can such a list exist?
>
> Very easily...
>
> > RiscOS is such that anyone can invent file types for themselves and
> > others to use.
>
> It may be, but RISC OS is slightly different.
>
> > I use several myself in my own programs. I have never released these
> > publically but I might have done.
>
> And you shouldn't (can't) without properly registered types.
>
> For personal use, in non-distributed software, the types &000 to &0FF are
> free to use. If you wish to distribute the software, you must apply for a
> filetype from the allocations service, and you will be issued with one
> from the range &100 to &FFF.
>
> Note that these ranges are different from those published in the PRMs, as
> Acorn re-jigged things a few years back when they thought there might be a
> filetype-crisis.
>
> > In an ideal world there should be a central register of file types to
> > avoid clashes.
>
> There is: it's the same allocations system that controls application
> names, module names, SWI chunks, error blocks and so on.
>

Wasn't there a group of types reserved for "internal use", or more
accurately users who needed a file type but wanted to keep in private.
I registered (with Acorn) about half a dozen file types in about 1994
or so for well known automotive manufacturer, most of which were based
on the application names and were certainly between &100 and &FFF.

Richard
--
www.beamends-lrspares.co.uk sales@xxxxxxxxxxxxxxxxxxxxxxx
Running a business in a Microsoft free environment - it can be done
Powered by Risc-OS - you won't get a virus from us!!
Helping keep Land Rovers on and off the road to annoy the Lib Dems
.

Relevant Pages

  • Re: New Helix (realplayer) problem with Mozilla plugin
    ... I haven't downloaded the latest player but I've always had to register ... the development editions myself in Mozilla. ... Now click on the each of the appropriate file types you want registered ... > and load the gxine plugins for the file type. ...
    (alt.os.linux.suse)
  • Re: Application Filetypes
    ... > central register of file types to avoid clashes. ... There *is* such an official list where you should register your ... application names, system variables, sprites, file types, etc. ...
    (comp.sys.acorn.apps)
  • 16x16 and 32x32 icon
    ... 16x16 and 32x32 Pixel Icons for Application and File Types ... Applications are required to register 16x16 and 32x32 pixel icons for their ... I only know how to register one by compiling one into the application. ...
    (microsoft.public.dotnet.framework.compactframework)
  • Re: VB6 File Association with my Application problem
    ... I had understood you were referring to file types commonly shared ... because (as a programmer) I disagree 100%. ... Associations allow icons for faster filetype identification. ... allows other apps to "launch" documents by filetype). ...
    (comp.programming)
  • Re: VB6 File Association with my Application problem
    ... >> Of all the file types you generate, how many will be of the ubiquity of ... >> without good reason. ... Associations allow icons for faster filetype identification. ... - Gerry Quinn ...
    (comp.programming)
Loading