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Groups > comp.sys.acorn.programmer > #5408

Scrollwheel support

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I want my program to scroll its window in response to mouse scrollwheel
events, which doesn't seem to happen automatically under RISC OS 5 (I
assumed the Wimp simply translated them into clicks on the scroll icons, but
apparently not).   Searching on the Web suggests that the scrollwheel
actually issues "Scroll Request" events (Wimp_Poll reason code 10) instead,
so I tried monitoring those - but the app doesn't seem to be receiving any.
I'm calling Wimp_Poll with a mask of &1, so they shouldn't be masked out.

How do I support a scrollwheel?

-- 
Harriet Bazley                     ==  Loyaulte me lie ==

Radioactive cats have 18 half-lives.

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Scrollwheel support Harriet Bazley <harriet@bazleyfamily.co.uk> - 2018-02-14 17:26 +0000
  Re: Scrollwheel support Alan Wrigley <usenet@alanwrigley.me.uk> - 2018-02-14 17:42 +0000
    Re: Scrollwheel support Harriet Bazley <harriet@bazleyfamily.co.uk> - 2018-02-15 02:35 +0000
      Re: Scrollwheel support Alan Wrigley <usenet@alanwrigley.me.uk> - 2018-02-15 09:23 +0000
      Re: Scrollwheel support Steve Fryatt <news@stevefryatt.org.uk> - 2018-02-15 09:34 +0000
        Re: Scrollwheel support Harriet Bazley <harriet@bazleyfamily.co.uk> - 2018-02-16 00:34 +0000
          Re: Scrollwheel support Harriet Bazley <harriet@bazleyfamily.co.uk> - 2018-02-16 01:12 +0000
          Scrollable dialogue box size; Was: Scrollwheel support Erik G <noreply123@xs4all.nl> - 2018-02-26 21:40 +0100
            Re: Scrollable dialogue box size; Was: Scrollwheel support Alan Wrigley <usenet@alanwrigley.me.uk> - 2018-02-26 22:49 +0000
              Re: Scrollable dialogue box size; Was: Scrollwheel support Harriet Bazley <harriet@bazleyfamily.co.uk> - 2018-02-26 23:19 +0000

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