Groups > comp.sys.acorn.programmer > #430

Font_DecodeMenu

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From	Paul Sprangers <Paul@sprie.nl>
Subject	Font_DecodeMenu
Newsgroups	comp.sys.acorn.programmer
Date	Tue, 14 Jun 2011 12:24:06 +0200
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Dear all,

It's hard to describe the abyss of my incomprehension when it comes to wimp
programming (to call but one example).

This time it is the attempt to create a font menu and choose a font from
there. I've managed to get a font menu on screen (with submenus for
weights), but as soon as I click on a font, the program quits with an Abort
on data etc.

The culprit appears to be the following call:
SYS "Font_DecodeMenu",0,fontmenu%,block%,buf%,&100

(fontmenu% holds the font menu, while buf% is dimensioned elsewhere.)

Strangely, I used exactly the same call in another program without
problems. Even more strangely, when I change block% to block%!36 (a
desperate man is willing to plunge into the unobvious), the program happily
runs further, but will always choose the first font in the menu, no matter
on which font I clicked.

Who will point at at the above stupidities?

Kind regards,
Paul Sprangers

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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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