How to setup a FastCGI development environment in CentOS 6

Install the development environment Install the C/C++ development tools to your server: yum install gcc gcc-c++ autoconf automake Now, before installing fcgi we need to add the epel repository: rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-7.noarch.rpm Once it is installed we can proceed to get the fcgi packages: yum install fcgi-devel spawn-fcgi Let’s see if we can compile a…

A simple C++/Wt (Witty) skeleton for starting an application

The objective of this lesson is to show you how to make a simple web page navigation using Wt. Before starting you have to remember that Wt can be used to create 1 URL applications. That means you can have a full application that runs using just one URL. However it is also useful to…

How to use a WComboBox with C++/Wt (Witty)

In this entry I’m going to create a simple form that shows how to add items to WComboBox in two different ways. The first one is useful for static combo items while the second one might be used to populate a combo from a database. The code is based on our previous Hello World application….

Creating a simple form using C++/Wt (Witty)

In this entry I’m going to create a simple form. This form will show you how to use controls and events in a very simple way. A couple things you have to notice before we start: I’m going to inherit from WContainerWidget. As you now know, I could have inherited from WApplication too. Most controls…

Two ways to create a Hello World application with Wt (Witty)

Let’s start by talking a little bit about some elements and methods you will find in the code. Inheriting from WApplication or WContainerWidget are the most common ways to start an application using Wt. A WApplication instance will be in charge of creating your html, head and body tags. A WContainerWidget is usually a div…

How to install Wt (Witty) on Windows

Installing Wt can be a challenging task if you don’t have the right tools. I spent many days trying to make it work with MinGW and Visual Studio 2005. No luck. Here are some of my results: MinGW I was never able to make a full compile. It was interrupted by this or that reason….

How to install the C++ Boost Libraries on Windows

Boost is a set of high-quality libraries that speed up C++ development. They are included in most linux distributions and some of them are already part of the C++ Standard Library. In the Windows environment, you have to install them in order to take advantage of them. If you are using Microsoft Visual Studio, you…

Installing gcc/g++ using MinGW and NetBeans in Windows

C and C++ languages are everywhere. All operating systems use them. People usually choose them because of their limitless power, velocity of execution, great portability and much more. In this tutorial I will show you how to install a C/C++ development environment under Windows. By the way, MinGW includes other compilers for languages like c,…

Switch from Debug to Release build options in Delphi

Unlike Microsoft’s Visual Studio, the option to switch from Debug to Release in Delphi is kind of hidden. However, it is very easy to use. Go to the Project menu and select Configuration Manager Now select your project, Choose a new configuration and Press the “play” button.   The following picture shows you how the…

Working with dynamic arrays in Delphi

One advantage of Delphi’s dynamic arrays is that they are automatically freed once they go out of scope. That simplifies memory management and gives you more flexibility on your applications. You can declare a dynamic array like this: Customers: array of string;   Before adding an element, you have to call the SetLength function to…

Tips to help you deal with Delphi Threads

Multithreading is one of those operating systems feaures that make your programs work in a more efficient way and give your users a better interactive interface. However they are not used by all developers. In this article I will focus on some important points you must have in mind when using threads on Delphi.  …

Creating Shortcodes in WordPress

Shortcodes enable developers to create special kinds of content, following the idea of macros. One very famous short code is “gallery” needed to insert a gallery of images into a post. The good thing about shortcode’s is that final users are free to decide where to insert them. WordPress’s Shortcode API handles all the tricky…

Add a Thumbnail to Admin Post Columns in WordPress

Here is a snippet to add 64×64 images to the Admin Post Columns in WordPress. Having thumbnails may result extremely helpful, specially if you have hundreds of posts. You have to copy and paste the following code into the functions.php file of your theme. function posts_columns($defaults){ $defaults[‘the_post_thumbs’] = __(‘Thumbs’); return $defaults; } function posts_custom_columns($column_name, $id){…

Download YouTube videos using Java

From time to time we all have needed to show a YouTube video where no Internet connection is available. This program will allow you to download a video from YouTube for later playback. It is important to say that YouTube constantly changes its video URL, so someday it may need some rework. The following code…

Free Image Resizer for Windows

This time I want to share with you a Windows application for image resizing. It’s a fact, size matters. That is why Image Resizer can be very useful for sharing pictures through email, uploading images to websites or posting them to social networks. If your images are smaller, then it will take you less time…

10 WordPress plugins you should have

This time I would like to make a list of recommended WordPress plugins. They are alphabetically sorted and have many different purposes. The descriptions shown were taken right from the WordPress description. Here we go: 1. Comment Rating By Bob King Description: Allows visitors to rate comments in a Like vs. Dislike fashion with clickable…

Coding An HTML 5 Layout From Scratch

HTML5 and CSS3 have just arrived (kinda), and with them a whole new battle for the ‘best markup’ trophy has begun. Truth to be told, all these technologies are mere tools waiting for a skilled developer to work on the right project. As developers we shouldn’t get into pointless discussions of which markup is the best. They all…

CSS – Attribute selectors

Attribute selectors allow you to select CSS elements based on their attributes or values. For example, if you want to select an image named “great.gif” you can do it by using the following rule: img[src=”great.gif”] { border: 3px solid #000; } There are four types of selectors. By attribute. The following example will select all the…

Redistribute your webpage contents to fit your browser width

by Andrés Jaimes Are you tired of dealing with different screen sizes for your web pages? Well, this information is for you. I will show you some CSS tricks to help you reorganize a webpage depending on your browser window width. We will start with a simple HTML 5 skeleton that includes a contents and…