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Groups > comp.lang.java.programmer > #38289

Re: how do you block the GUI repaints?

From Daniele Futtorovic <da.futt.news@laposte.net>
Newsgroups comp.lang.java.programmer
Subject Re: how do you block the GUI repaints?
Date 2018-05-23 22:35 +0200
Organization A noiseless patient Spider
Message-ID <pe4jbf$u1c$1@dont-email.me> (permalink)
References (8 earlier) <593f7f26-0f96-4869-9f55-12917ff65574@googlegroups.com> <pe3tv0$m86$1@dont-email.me> <dc7c06c5-d19f-406d-9ef2-39afd210c18a@googlegroups.com> <pe45ua$600$1@dont-email.me> <29c0196d-8d2e-489c-ab8a-e99fab3012ad@googlegroups.com>

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On 2018-05-23 19:51, Eric Douglas wrote:
> Yes, I am or was confused.  I'm thinking a String is just a collection of characters 

Correct.

> which are just collections of bytes, 

Incorrect. They are an /interpretation/ of bytes. The same bytes can
mean different characters depending on the encoding.

> and once the String is created it should hold anything a byte array can hold 

Technically, it can. It's just that what you /think/ it is holding might
differ from what it (the String) thinks it's holding... again, because
encoding is an interpretation of data.

> and the control needs to know how to display it.> Apparently it's the font that needs to know how to display it.

Incorrect. If it isn't a character - i.e. if there isn't a character
corresponding to the underlying byte sequence in the given
interpretation (encoding) - then it's not the font's responsibility to
display it.

> So, I don't know how Notepad++ comes up with their codes to show what non-displayable characters look like, 

A mix of making stuff up and the control sequences from the old ASCII
days, I'd reckon.

> but if the Font has a method to say the character can't be displayed I'll just go with displaying a placeholder, most likely a dot (".") 

Or a square, perhaps?

-- 
DF.

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Thread

how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-22 10:59 -0700
  Re: how do you block the GUI repaints? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2018-05-22 13:22 -0500
    Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-22 13:00 -0700
      Re: how do you block the GUI repaints? Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-05-22 16:29 -0400
        Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-22 13:51 -0700
          Re: how do you block the GUI repaints? Martin Gregorie <martin@mydomain.invalid> - 2018-05-22 21:41 +0000
          Re: how do you block the GUI repaints? Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-05-22 18:03 -0400
            Re: how do you block the GUI repaints? Andreas Leitgeb <avl@logic.at> - 2018-05-22 22:22 +0000
              Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-23 07:55 -0700
                Re: how do you block the GUI repaints? Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-05-23 11:06 -0400
                Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-23 08:19 -0700
  Re: how do you block the GUI repaints? Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-05-22 14:43 -0400
    Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-22 13:20 -0700
      Re: how do you block the GUI repaints? Daniele Futtorovic <da.futt.news@laposte.net> - 2018-05-22 22:47 +0200
        Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-22 13:58 -0700
          Re: how do you block the GUI repaints? Daniele Futtorovic <da.futt.news@laposte.net> - 2018-05-23 04:30 +0200
            Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-23 05:54 -0700
              Re: how do you block the GUI repaints? Daniele Futtorovic <da.futt.news@laposte.net> - 2018-05-23 15:58 +0200
                Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-23 07:26 -0700
                Re: how do you block the GUI repaints? Daniele Futtorovic <da.futt.news@laposte.net> - 2018-05-23 16:30 +0200
                Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-23 07:48 -0700
                Re: how do you block the GUI repaints? Daniele Futtorovic <da.futt.news@laposte.net> - 2018-05-23 18:46 +0200
                Re: how do you block the GUI repaints? Eric Douglas <e.d.programmer@gmail.com> - 2018-05-23 10:51 -0700
                Re: how do you block the GUI repaints? Daniele Futtorovic <da.futt.news@laposte.net> - 2018-05-23 22:35 +0200

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