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Can anybody recommend a Bar Code web server control for formats 39 and 128 formats?
UPDATE: I posted this after being given a choice of 3 controls we'd never heard of. I was hoping to get a recommendation from somebody who is using something that is popular, stable and a commercial product. It looks like we will just go with one of the choices our manager sent. If you are reading this after the fact, and have a good recommendation, please add it for others needing one in the future. thx
There is a series of articles on CodeProject articles that do just that:
Drawing Barcodes in Windows Part 1 - Code 39
Drawing Barcodes in Windows Part 5 - Code 128
Another one:
Barcode Image Generation Library
Another way, using barcode Fonts, but simple to use in ASP.Net
Barcodes in ASP.NET applications
Actually, implementing you own barcode drawing routines is not too hard if you stick with simple 1D barcodes.
The best book ever on the subject is The Bar Code Book. It's one of these absolute reference books that you just want to keep and read out of pure nerdy pleasure.
There is also an open source ASP.NET barcode generation framework on www.codeplex.com:
http://www.codeplex.com/BarcodeRender
I did have a problem with the Interleaved 2 of 5 symbology, but I believe it was added rather recently. Perhaps the other symbologies are more stable.
Guys... don't go too far. There are Windows Fonts (TrueType fonts / TTF) that can easily be used to draw bar codes. the Graphics object is your friend.
You definitely should check out these two options:
1) www.idautomation.com
2) barbeque open source library (Java) to generate barcodes.
Both are excellent!
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I am trying to write an app that should ideally work on multiple platforms. Most importantly, it should become a webapp, but also be usable as a desktop solution for windows. (Potentially Iphone/Ipad App, but I want to start small)
That said, I thought about using kivy and it seems ok overall, however it is important to me to display data from sqlite databases. The databases are nothing special or overly complex, just containing data on let's say customers, employees and financial (banking) data. I want to add data and display it as tables or graphs. That is basically the whole functionality relating to the GUI.
I realized that the table widget KivyMD seems to be the only one I can use in that regard. It occurs to me, that the PyQt6-table funcionality is much better though.
I now realized though, that I cannot make a webapp with neither PyQt6 nor Kivy. Unfortunate.
So it seems I have to choose webapp or desktop or mobile app.
As webapp is the most important one, which framework should I use?
And no, I do not want to switch to Java Script :). I want to stick with Python for now. I don't have time to learn Java Script at this time, maybe later.
Any feedback would be appreciated.
Best
Ben
See above :)
I tried Kivy and PyQT.
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I would like to know whether there any drawing tools available to map a given use case solution in terms of EIPs. There is a stencil available for MS Visio and a SVG alternative for OpenOffice. The shapes in the stencil is good but does not seem like the best graphics for a presentation. Any alternatives available for drawing EIPs? Thanks in advance.
diagrams.net has a set of EIP stencils built-in. I'm not sure if it addresses the issues in the question, but the tool is free. (I'm a developer on the project).
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Btw you could automate that. Check this:
http://camel.apache.org/visualisation.html
Use camel:dot maven goal
I've created an OmniGraffle EIP stencil years ago for the book Spring Integration in Action. I pushed it to Graffletopia, but I cannot find it there quickly. Let me know if you are interested in the OmniGraffle stencil and I'll search a bit more.
What is wrong with the stencils? Those are simply the shapes presented in the book Enterprise Integration Patterns. Looking at a presentation from the author of the book, I don't think the shapes look bad in presentation: http://www.eaipatterns.com/docs/jaoo_hohpeg_enterpriseintegrationpatterns.pdf.
I am not aware of any tools to draw EIP scenarios other than say Visio, Open Office Draw or similar tools. There are some IDEs to create routes (Fuse IDE and Talend Open Studio for instance), but these are really just to create runnable EIP implementations, not for presentation.
Late to the party, but Lucidchart (online cloud-based diagram tool) has an Enterprise Integration Pattern stencil, too.
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I've been interested in Visual Programming Languages (VPL) for a while. However I've hardly seen any environments that can be used for practical projects such as Windows apps or web services.
I've heard of the following:
LabVIEW - electronics and instrumentation
Microsoft VPL - robotics
Game Maker - games
Google App Inventor - Android apps
Tersus - web apps
Are there any other VPL environments that generate executable programs and can be used for practical applications?
Probably a bit too late for this answer, but I'm interested in the same thing and for anyone else might read this and find it useful.
Here is a new one just for creating windows applications, it's called Korduene, however beware it is alpha just now.
You may have a look at the WPF based TUM.CMS.VPLControl
I don't know if it is practical enough for you but you can have a look at Thyrd, which was recently featured in the last Emerging Languages conference:
http://thyrd.org/
It is not just yet another visual stuff, there is really something there
Yahoo Pipes has a somehow limited scope, but I suppose it is one of the more popular examples of visual programming tools that are really used in practice.
DRAKON Editor
http://drakon-editor.sourceforge.net/
It generates code for compilation or interpretetion, not actual executable.
It it supports visual programming in several programming languages, including Java, Processing.org, D, C#, C/C++ (with Qt support), Python, Tcl, Javascript, Lua and Erlang.
Why to use DRAKON than other diagramming systems?
No line intersections. You will never find in DRAKON diagram two or
more lines intersecting each other! Not seen in other diagramming
systems!
Silhouette structure. It allows to break one diagram in to several
logical parts. Not seen in other diagramming systems!
No slanting or curved lines. Only straight lines with right angles.
Icons are placed only on vertical lines.
Branching is done in a simple, visible and consistent way.
Each diagram has one entry and one exit.
More about DRAKON here:
http://en.wikipedia.org/wiki/DRAKON
i recomend Outsystems for .net/java , it´s a great app Outsystems
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There are a couple of online services that offer PSD to XHTML/CSS. Which one do you recommend? How should I choose one?
First, I recommend using someone in your own network of people first. If you know someone with this skill who is open to freelancing, offer the project to them. Talk to local schools with web design/development classes and ask if they keep a list of freelance students. Build up your business relationships with people close to you.
If that doesn't work, choose one online the way you would choose anything. Research. Look at their portfolios. Go to one of the sites they did and "view source" in your browser to look at their code. Ask a web developer friend if she thinks it's well done. Look at more than one example and make sure they have consistent quality. Try to find out how long they've been around. (Do a whois search and find out how long the site has been registered, for one). Look at the person's resume if they offer it, or ask for a resume and any references they may have. You might even try to contact one of their clients and ask how their experience was with them.
In the end, when you've balanced price and your research, you have to take a leap of faith, but with your research, you probably will choose well.
You might want to consider learning how to do it yourself. I find that even with a complex design, I usually spend 90% of my time making the design in Photoshop and only 10% converting that to HTML+CSS. It's really worth getting to know HTML and CSS inside-out so you can complete the process.
Some clue here
alt text http://shup.com/Shup/375934/11063214233-My-Desktop.png
You can get help from this site
http://www.psdtohtmlreviews.com/
And I think this one is mostly recommended
http://designshack.co.uk/articles/reviews/psd-to-html-by-psd2html
But first of all consider answer of #josh
And here are links of some good tutorials of PSD 2 HTML conversion http://www.bestpsdtohtml.com/20-best-psd-to-xhtml-css-tutorials/
You can learn yourself
If you have to convert for once you may look at http://csswithcolour.com/
and if you have requirements for many projects or future projects then
http://htmlbutcher.com/ looks to be a good tool.
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Anyone who's tried to study mathematics using online resources will have come across these Java applets that demonstrate a particular mathematical idea. Examples:
http://www.math.ucla.edu/~tao/java/Mobius.html
http://www.mathcs.org/java/programs/FFT/index.html
I love the idea of this interactive approach because I believe it is very helpful in conveying mathematical principles.
I'd like to create a system for visually designing and publishing these 'mathlets' such that they can be created by teachers with little programming experience.
So in order to create this app, i'll need a GUI and a 'math engine'. I'll probably be working with .NET because thats what I know best and i'd like to start experimenting with F#. Silverlight appeals to me as a presentation framework for this project (im not worried about interoperability right now).
So my questions are:
does anything like this exist already in full form?
are there any GUI frameworks for displaying mathematical objects such as graphs & equations?
are there decent open source libraries that exposes a mathematical framework (Math.NET looks good, just wondering if there is anything else out there)
is there any existing work on taking mathematical models/demos built with maple/matlab/octave/mathematica etc and publishing them to the web?
You might want to look at Wolfram demonstrations, and at the mathematica web player. This lets you take a Mathematica file and run it from a browser, and the demonstrations site already has thousands of demonstrations.