[comp.sys.amiga] PenHeight & PenWidth , Error Trapping

john13@garfield.UUCP (John Russell) (11/16/87)

--
There are these very interesting-sounding variables in the RastPort structure
called PenHeight and PenWidth. When I put different values in them, the pen
still draws in normal size. Is there any convention, setup, or non-obvious
trick needed to make them functional? Or are they privileged (if so, what
uses them?) ?

Also, is there any magic needed to make the various software-failure traps
call some abort routine of my own, or is _all_ the relevant info laid out
well in the RKM, etc. I wouldn't want to have to do in-line assembly or much
in the way of BCPL, or figure out compiler-specific solutions by trial and
error.

John
-- 
"A Chinese soldier in Tibet who tried to tear off a British woman's Sergeant
 Bilko T-shirt has become the first known case of someone mistaking Phil
 Silvers for the Dalai Lama."
				-- Toronto Globe & Mail, Nov. 14/87

carolyn@cbmvax.UUCP (Carolyn Scheppner CATS) (11/18/87)

In article <4221@garfield.UUCP> john13@garfield.UUCP (John Russell) writes:
>--
>There are these very interesting-sounding variables in the RastPort structure
>called PenHeight and PenWidth. When I put different values in them, the pen
>still draws in normal size. Is there any convention, setup, or non-obvious
>trick needed to make them functional? Or are they privileged (if so, what
>uses them?) ?

   I believe Dale once told me they are reserved and currently unimplemented.
So, best to leave them alone.

-- 
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Carolyn Scheppner -- CATS   >>Commodore Amiga Technical Support<<
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