OS_ReadPoint

[Tony van der Hoff]

Christian Ludlam <chris at recoil.org> wrote in message
<bf5b53714c.christian at venice.lab>

> Hi,
> 
> os_read_point claims to return an os_gcol, which is a byte wide. This may
> have been true on RISC OS 3.1, but it seems that later versions return the
> actual 15 / 24 bit colour in appropriate screen modes.
> 
> I don't know if there's already a type for this - it's not an os_colour.
> 

Thanks, Christian. First, despite some fairly extensive searching, I have
not been able to find any authoritative reference to corroborate this. Have
you got any (apart from pragmatic observation)?

Secondly, if not an os_colour, what is the format? Are you suggesting that
we define a new type for this, which will entail defining a new swi call -
say os_read_pointw?

Whilst I'd be quite happy to add this call, I'm not entirely sure on how to
implement it. Does anyone else have any suggestions?

-- 
Tony van der Hoff
Buckinghamshire England