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Groups > comp.sys.acorn.programmer > #6360

Wimp_RedrawWindow protocols

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[This topic is a spin off from elsewhere]

In article <mpro.rafg4d01cbkc603j7.news@stevefryatt.org.uk>,
   Steve Fryatt <news@stevefryatt.org.uk> wrote:

> > > When a Wimp_Poll returns reason code 1 (RedrawWindow), then
> > > Wimp_RedrawWindow must be the first Wimp call made, and it should
> > > not be called at any other time.

> > Ah, now I understand what you mean - and I sin against that rule
> > indeed. Before calling Wimp_RedrawWindow, I do a Wimp_GetWindowInfo
> > call. Should I really move that one after the redraw call?

> What details do you need to find from Wimp_GetWindowInfo to perform the
> redraw, that you don't get in the block returned by Wimp_RedrawWindow and
> Wimp_GetRectangle?

> > If I do, things go horribly wrong.

> Define "horribly wrong"... which might help us help you. :-)

Horribly wrong in this case means that I get a 'Number too big' error in
another subroutine when opening the application window.

The details that I get from Wimp_GetWindowInfo is the x and y origins of
the window in question:

SYS "Wimp_GetWindowInfo",,block%
ox% = block%!4  - block%!20
oy% = block%!16 - block%!24

However, I noticed that I can move the latter two lines to within the WHILE
more% - ENDWHILE loop and delete the Wimp_GetWindowInfo call, so that the
RedrawWindow call is the first one in the redraw routine. Unfortunately, it
doesn't change anything about some other glitches, that probably have
nothing to do with the redraw routine, but the more so with my general and
ubiquitous flaws.

Paul

-- 
http://riscos.sprie.nl

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Thread

Wimp_RedrawWindow protocols Paul Sprangers <Paul@sprie.nl> - 2022-04-16 12:57 +0200
  Re: Wimp_RedrawWindow protocols Steve Fryatt <news@stevefryatt.org.uk> - 2022-04-16 12:57 +0100
    Re: Wimp_RedrawWindow protocols Paul Sprangers <Paul@sprie.nl> - 2022-04-16 14:49 +0200
      Re: Wimp_RedrawWindow protocols Harriet Bazley <harriet@bazleyfamily.co.uk> - 2022-04-16 14:19 +0100
        Re: Wimp_RedrawWindow protocols Paul Sprangers <Paul@sprie.nl> - 2022-04-16 17:18 +0200
      Re: Wimp_RedrawWindow protocols Martin <News03@avisoft.f9.co.uk> - 2022-04-16 14:49 +0100

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