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Groups > comp.sys.acorn.programmer > #5750

Re: Font problem

From Martin Wuerthner <spamtrap@mw-software.com>
Newsgroups comp.sys.acorn.programmer
Subject Re: Font problem
Date 2019-05-13 19:43 +0200
Organization MW Software
Message-ID <mpro.prgel000idcos0ogk.spamtrap@mw-software.com> (permalink)
References <003219b257.Alan.Adams@ArmX6.adamshome.org.uk> <57b27c5a25Paul@sprie.nl> <e52928b357.Alan.Adams@ArmX6.adamshome.org.uk>

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Alan Adams <alan@adamshome.org.uk> wrote:

> I still want to know what mechanism could cause the desktop font to revert
> to the system font. Is it, for example, a pointer in shared memory which
> could be corrupted?

No, that would be very unlikely. From what I have observed when using fonts
in icons the Wimp has a rather conservative approach to error handling in
this area: If anything goes wrong at any point with a font used in a window,
it switches everything back to the system font. So, the most likely cause is
that something is wrong with the icon definitions in your window. For
instance, when you copy the icon are you certain that you handle its
indirect data and validation string pointers correctly?

-- 
Martin Wuerthner         MW Software      http://www.mw-software.com/

------- RISC OS Software for Design, Printing and Publishing --------

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Thread

Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-10 19:25 +0100
  Re: Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-10 19:35 +0100
    Re: Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-10 20:19 +0100
  Re: Font problem Matthew Phillips <spam2011m@yahoo.co.uk> - 2019-05-10 21:21 +0100
  Re: Font problem Harriet Bazley <harriet@bazleyfamily.co.uk> - 2019-05-11 01:20 +0100
  Re: Font problem Paul Sprangers <Paul@sprie.nl> - 2019-05-11 14:28 +0200
    Re: Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-12 20:44 +0100
      Re: Font problem Martin Wuerthner <spamtrap@mw-software.com> - 2019-05-13 19:43 +0200
        Re: Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-13 21:54 +0100
        Re: Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-14 11:57 +0100
      Re: Font problem jgh@mdfs.net - 2019-05-14 21:10 -0700
        Re: Font problem Alan Adams <alan@adamshome.org.uk> - 2019-05-15 10:11 +0100

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