[Lazarus] Displaying text with colour and insertion point

Mark Morgan Lloyd markMLl.lazarus at telemetry.co.uk
Thu May 17 09:35:45 CEST 2012

Hans-Peter Diettrich wrote:
> Mark Morgan Lloyd schrieb:
>>> I assume you have a fixed amount of lines and columns? If so it 
>>> should be very simple to write a pos-highlighter (part of your 
>>> project, does not need to be registerred in IDE), that has
>>> CharAttributes: Array[1..maxLine] of array [ 1..MaxColumn] of TAttribute
>>> Of course that is not practical if you have thousands of lines, as it 
>>> would require a lot of storage....
>> Since it's emulating a mechanical terminal that printed to roll paper, 
>> the number of lines is indeterminate and increasing. I suppose that I 
>> could limit it to (say) 1000, but if other people started using it 
>> there'd be bound to be somebody complain.
> Have you ever seen a roll of paper, of indeterminate length? ;-)

Yes. I've also seen all sort of printer problems which can cause the 
number of lines that will fit on a piece- let alone a roll- of paper by 

> And a mechanical terminal with multi-color ribbon?
> [Well, I've seen a black/red ribbon many years ago...]

Yes. And more to the point, the terminal that I'm emulating 
/specifically/ has a black/red ribbon which is used in a definite way- 
as shown on the link I posted.

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

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