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Re: JTextArea

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On Tue, 27 Sep 2016 05:19:37 -0700, Eric Douglas wrote:

> On Tuesday, September 27, 2016 at 8:13:40 AM UTC-4, Eric Douglas wrote:
>> Am I missing something?
>> I'm trying to use this control but if I select text then I click in the
>> middle of the text it un-highlights.  I should be able to click in the
>> highlighted text to drag it elsewhere.  Why does it immediately
>> un-highlight on mouse down and how do I fix it?
>
Probably because JTextArea is primarily intended for displaying text and 
allowing parts of it to be copied to other windows. Yes, a JTextArea can 
be used to enter text provided that the instance has been set editable 
(the default) but its not really intended for editing text: if that's 
what you want, you're better off using a JEditPane instance and doing 
clever things with the caret and the action listeners as needed.

FWIW some time back I built a 24x80 green screen terminal emulator round 
a JTextArea instance with its colours and font set appropriately. I 
handled both keyboard input and text display by setting editable and 
wordwrap to false, linewrap to true and using a KeyAdaptor together with 
the JTextArea text manipulation methods to accept and display keyboard 
input and sending it to the host computer. JTextArea text manipulation 
methods were also used to display host computer responses on the screen. 
That was fairly easy to implement and ran happily at 9600 baud, the 
normal linespeed of the host computer. This emulator was developed and 
tested on a 480 MHz Thinkpad laptop using Java 1.4 and running Linux. 

Before you ask, the terminal emulator used a standard network connection 
to talk to a serial port handler, which was written in C, and which 
handled the host connection.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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JTextArea Eric Douglas <e.d.programmer@gmail.com> - 2016-09-27 05:11 -0700
  Re: JTextArea Eric Douglas <e.d.programmer@gmail.com> - 2016-09-27 05:19 -0700
    Re: JTextArea Martin Gregorie <martin@address-in-sig.invalid> - 2016-09-27 14:44 +0000
      Re: JTextArea Eric Douglas <e.d.programmer@gmail.com> - 2016-09-27 08:28 -0700
        Re: JTextArea Martin Gregorie <martin@address-in-sig.invalid> - 2016-09-27 17:44 +0000
          Re: JTextArea Eric Douglas <e.d.programmer@gmail.com> - 2016-09-27 14:00 -0700

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