On 04/03/2018 10:28 PM, Scott Kostyshak wrote:
On Sun, Feb 25, 2018 at 12:49:47AM +0000, Paul A. Rubin wrote:
On 02/24/2018 02:40 PM, ll...@writersglen.com wrote:
Hello,

I've been struggling to format attractive code listings. The boxes in
the attached mini-lyx document show my feeble attempts so far.

Box 2 is close to what I want, but has numerous problems:

1. Rather than red and white, I'd want black and light gray

2. I'd like width to be full width of text area of my page

3. I'd to use \listno\ in header, but get this error message when I try:

File ended while scanning use of \codelist.

<*> listno.tex

*** (job aborted, no legal \end found)

4. If I try to add a second code listing I get error messages or a
broken box depending upon how I try to terminate the first list
specification

5. I'd like to use a monospace font in the code area that has both
normal and bold face

Most of all, I'd like to understand how to gain programming control over
the appearance of my code list boxes. I've been studying the tcolorbox
manual. But when I try to change parameters in the lyx preamble nothing
seems to change. So I'm guessing there's a lyx issue I'm ignorant of.

I'd much appreciate any and all tips to help solve these issues.

Many thanks,

Lloyd R. Prentice

[I screwed up and replied privately rather than to the list, so I'm
repeating the reply here.]

Lloyd,

There are a couple of problems with your MWE. One is that it won't compile
due to a typo. In the TeX box after "More code", you have a left parenthesis
where you need a left brace. The other is that you seem to be using a
nonstandard document class. It's a good idea to keep MWEs as vanilla as
possible.

To make the background for the text in your code box more gray, ratchet up
the "5" in colback settings. Right now you have gray!5!white, which is a mix
of 5% gray and 95% white. Try something like 25 rather than 5.

I believe the specification red!1175!black for the colframe parameter is
illegal; the xcolor package wants numbers between 0 and 100. Since I'm not
sure what you're going for here, I can't make a useful suggestion, other
than to say the closer you get to 0 (100) the more red (black) you get in
the mix.

If you want the box header to have a pure black background, add
"colbacktitle=black" to the definition of the box.

To get full text width, you may need to use \newtcolorbox rather than
\newtcbox (which does not seem to like the width option). That will mean
using \begin{my box name} and \end{my box name} to create the box. The extra
option you give in the definition of the color box is "width=\textwidth".

An easier approach, in my opinion, is to use the features of the LyX module
to define a custom color box. I've attached a hacked copy of your file,
changing the document type to plain old book, fiddling a bit with your
preamble (while noting that the color box stuff in the preamble won't be
needed at all if you use the module features), and demonstrating the custom
color box feature from the module.

As for your other questions, it's dinner time here, so you're on your own.
Hopefully someone else will pick up the thread.

Paul
I'm CC'ing Lloyd. Since I did not see a reply, I'm guessing that he did
not receive the email.

Scott
Sorry. Lloyd got back to me directly and we sorted it out off the list. I meant to come back and close the thread but forgot.

Paul

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