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Groups > comp.sys.acorn.programmer > #436
| From | Martin Wuerthner <spamtrap@mw-software.com> |
|---|---|
| Newsgroups | comp.sys.acorn.programmer |
| Subject | Re: Font_DecodeMenu |
| Date | 2011-06-15 13:18 +0200 |
| Organization | MW Software |
| Message-ID | <a995b3e351.martin@bach.planiverse.com> (permalink) |
| References | <51e32acc58Paul@sprie.nl> <mpro.lmsv0p01nzmww01kn.news@stevefryatt.org.uk> <4df83a04$0$14668$ba4acef3@reader.news.orange.fr> |
In message <4df83a04$0$14668$ba4acef3@reader.news.orange.fr>
Rick Murray <heyrickmail-usenet@yahoo.co.uk> wrote:
> On 14/06/2011 23:43, Steve Fryatt wrote:
>> SYS "Font_DecodeMenu",0,font_menu,block%,returned_name%,size3%
>> SYS "XOS_GenerateError",returned_name TO returned_name$
> ^ missing % ;-)
> Erk! Hacky, using a side-effect to convert!
> You could drop the XOS_GenerateError and use something like:
> CASE $returned_name% OF
No, that will not work. The $ operator only works for CR-terminated
strings.
> or perhaps just specify returned_name$ in the DecodeMenu SWI to tell the
> system you want it as a string in the first place.
No, you cannot do that. Font_DecodeMenu needs a buffer pointer.
The above is a bit of a hack, but a pretty standard one for reading a
ctrl-terminated string from memory. Better to hide that call away in a
function and document it there, but Steve was not actually claiming
that this is production quality code.
--
Martin
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Martin Wuerthner MW Software http://www.mw-software.com/
RISC OS Software for Design, Printing and Publishing
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Font_DecodeMenu Paul Sprangers <Paul@sprie.nl> - 2011-06-14 12:24 +0200
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-14 15:54 +0200
Re: Font_DecodeMenu Martin Wuerthner <spamtrap@mw-software.com> - 2011-06-14 20:52 +0200
Re: Font_DecodeMenu Paul Sprangers <Paul@sprie.nl> - 2011-06-14 23:56 +0200
Re: Font_DecodeMenu Steve Fryatt <news@stevefryatt.org.uk> - 2011-06-14 22:43 +0100
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-15 06:50 +0200
Re: Font_DecodeMenu Martin Wuerthner <spamtrap@mw-software.com> - 2011-06-15 13:18 +0200
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-15 15:38 +0200
Re: Font_DecodeMenu Steve Drain <steve@kappa.me.uk> - 2011-06-15 17:20 +0100
Re: Font_DecodeMenu Steve Fryatt <news@stevefryatt.org.uk> - 2011-06-15 20:24 +0100
Re: Font_DecodeMenu "Ste (news)" <steve@revi11.plus.com> - 2011-06-15 21:19 +0100
Re: Font_DecodeMenu Steve Fryatt <news@stevefryatt.org.uk> - 2011-06-15 22:14 +0100
Re: Font_DecodeMenu "Ste (news)" <steve@revi11.plus.com> - 2011-06-16 14:35 +0100
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-16 18:10 +0200
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-16 18:04 +0200
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-16 18:51 +0200
Re: Font_DecodeMenu "Ste (news)" <steve@revi11.plus.com> - 2011-06-16 18:12 +0100
Re: Font_DecodeMenu John Tytgat <this@is.invalid> - 2011-06-21 19:19 +0200
Re: Font_DecodeMenu Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-06-22 19:18 +0200
Re: Font_DecodeMenu "Ste (news)" <steve@revi11.plus.com> - 2011-06-25 17:53 +0100
Re: Font_DecodeMenu John Tytgat <this@is.invalid> - 2011-06-27 13:06 +0200
Re: Font_DecodeMenu Alan Wrigley <spamhater@keepyourfilthyspamtoyourself.co.uk> - 2011-06-15 22:13 +0100
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