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mini-term in qt4

Posted 01-17-2013 at 04:34 AM by rainbowsally
Updated 08-06-2014 at 08:58 AM by rainbowsally

mini-term in qt4.

Today's features:
  • A simple terminal-like application built from a qt4 class that can be used for other stuff too.
  • The present application can run shell commands and has copy/paste (ctrl-c, ctrl-v) capabilitity.
  • Another example of the Windows-like api so that C/C++ code can run in Qt4.
  • Runs the custom code (terminal in this case) inside a QT 'exec' loop... sorta. We call it 'run()'.

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sed awk tr etc

Posted 01-15-2013 at 07:33 AM by NullTerminator
Updated 01-18-2013 at 07:54 AM by NullTerminator (add sed cmd for non prinitng char)

A couple sample to strip unreadable characters from a binary file
# Translate junk characters into newlines while squeezing
C:\Temp>tr -sc '[\011\012\015\040-\176]' \n < blob_of_data.txt

# Translate and discard single character lines
C:\Temp>tr -sc '[\011\012\015\040-\176]' \n < blob_of_data.txt | awk "length($0) > 1"
# replace a bad character in a file
0xa0 is a 'non breaking space' that appears often when...
LQ Newbie
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Views 768 Comments 0 NullTerminator is offline

Quick and dirty plotting with Haskell: Supplement

Posted 01-15-2013 at 12:54 AM by hydraMax (Bits and Pixels)

I just wanted to add a brief note to my previous post: It is also quite simple to do a plot with multiple functions. The following code gives the graph seen in the attached PNG:

h> import Graphics.Gnuplot.Simple
h> let f x = 3 - 2*x + 4*x**2
h> let g x = 8*x - 2
h> let h a x = g a * (x - a) + f a
h> plotFuncs [] (linearScale 1000 (-10,10)) [f, g, h (-5)]
f(x) is a function, g(x) is the derivative of f(x), and...
Attached Images
File Type: png plotFuncs.png (49.5 KB, 4 views)
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Views 588 Comments 0 hydraMax is offline

QT4 -- Having trouble with qInitResouces_<appname>() ?

Posted 01-14-2013 at 04:46 AM by rainbowsally
Updated 01-14-2013 at 05:01 AM by rainbowsally

Having trouble with qInitResouces_<appname>()?

Try this.

#define Q_INIT_RESOURCE(name) extern void qInitResources_##name()
The version of this macro in qglobal.h could never have ever worked.

If you enjoy digging into the low level stuff, I think you'll be amused by the context of this bug. ;-)

- The Computer Mad Science Team...
Posted in Uncategorized
Views 627 Comments 0 rainbowsally is offline

Slackware “Clean Upgrade” (with pre- and post-installation tasks)

Posted 01-13-2013 at 11:14 PM by Lufbery (The Slacker's Blog)
Updated 01-13-2013 at 11:22 PM by Lufbery


Slackware is perfectly usable from a fresh (full) installation with only two essential tasks to perform after the installation is complete:
  1. creating an initial RAM disk (using mkinitrd) so that one boots to the generic kernel, and
  2. creating at least one non-root user (using adduser).

Everything else — installing additional software, setting up e-mail, etcetera — is really personalizing and/or customizing to suit one’s own tastes and needs....
Senior Member
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Views 1235 Comments 2 Lufbery is offline


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