[Tutor] What is Curses and why do they call it that.
alan.gauld at btinternet.com
Tue Oct 13 01:48:16 CEST 2009
"Katt" <the_only_katala at verizon.net> wrote
> Some documentation indicate it as a module that will translate commands
> to control screen output. Is this right? Also, why do they call it
Thats right, it provides a way to draw GUI like "windows" on the screen
using graphics characters if they are available or plain ASCII if not, thus
it offers a degree of terminal independance. It was popular in the period
before GUIs became normal but after they became desirable - ie
A curses screen field will look something like (use monospace font
for this bit)
Name | |
And you could define the box as a window and position the cursor inside it.
You could then clear the window, read its contents, change its colour,
even resize it etc. Just like an Edit box in a GUI.
Nowadays most usage is to deliver cursor control to console mode
programs rather than building multi-windowed displays etc.
The default window is the full screen.
See the Event Driven Programming topic of my tutorial for a very simple
demo of curses in use.
The name curses is a pun on the word cursor and the typical reaction
of programmers forced to use curses to build a "GUI"! :-)
Author of the Learn to Program web site
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