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Detecting click in writable icon

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  Detecting click in writable icon Alan Adams <alan@adamshome.org.uk> - 2011-11-10 19:40 +0000
    Re: Detecting click in writable icon Steve Fryatt <news@stevefryatt.org.uk> - 2011-11-10 20:40 +0000
      Re: Detecting click in writable icon Alan Adams <alan@adamshome.org.uk> - 2011-11-10 21:31 +0000

#1013 — Detecting click in writable icon

I need to be able to detect when the user has clicked (anywhere) in 
one of a BASIC program's windows. At the moment I can detect the 
window background, by setting its button type to click, and I can 
detect the action buttons. The writable icons however are a problem.

Button type has to be 14 or 15 as far as I can see, and neither return 
an event when the user clicks. Looking at the Window Manager manual, 
events 14 and 15 looked possible, activated by setting the poll flag 
bit 25, but that simply returns an error when calling wimp_poll - 
invalid parameter. I assume therefore this is a Select feature - I am 
on RO 5.16 and this program needs to work for window manager 3.80 - 
i.e. universal boot version.

I can detect pointer entering window, but it might occur, if the 
pointer doesn't leave the window before re-entering. In any case, 
that's too general.

Any ideas?

-- 
Alan Adams, from Northamptonshire
alan@adamshome.org.uk
http://www.nckc.org.uk/

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#1014

On 10 Nov, Alan Adams wrote in message
    <584c193052.Alan.Adams@laptop.adamshome.org.uk>:

> I need to be able to detect when the user has clicked (anywhere) in one of
> a BASIC program's windows. At the moment I can detect the window
> background, by setting its button type to click, and I can detect the
> action buttons. The writable icons however are a problem.
> 
> Button type has to be 14 or 15 as far as I can see, and neither return an
> event when the user clicks.

Are you sure?  Type 14 certainly returns click (*1) and drag (*16) events,
and the wording of type 0 in the PRM suggests that type 15 could also return
click events.

> Looking at the Window Manager manual, events 14 and 15 looked possible,
> activated by setting the poll flag bit 25, but that simply returns an
> error when calling wimp_poll - invalid parameter. I assume therefore this
> is a Select feature

It is documented in the RISC OS 6 PRM, so I'd assume so.
-- 
Steve Fryatt - Leeds, England

http://www.stevefryatt.org.uk/

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#1015

In message <mpro.lugpfk04fo8q801k3.news@stevefryatt.org.uk>
          Steve Fryatt <news@stevefryatt.org.uk> wrote:

> On 10 Nov, Alan Adams wrote in message
<snip>
>> Button type has to be 14 or 15 as far as I can see, and neither return an
>> event when the user clicks.

> Are you sure?  Type 14 certainly returns click (*1) and drag (*16) events,
> and the wording of type 0 in the PRM suggests that type 15 could also return
> click events.

Testing again - type 14 does return reason code 6, click. Type 15 
doesn't return a click, but does return code 12 if the caret wasn't 
previously in the icon.

I'm not sure what i did wrong the first time...


-- 
Alan Adams, from Northamptonshire
alan@adamshome.org.uk
http://www.nckc.org.uk/

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