Two factor authentication is a way of increasing the security of an application by requiring the user to provide more than a simple password (one factor authentication).  Two factor authentication utilizes two of the following factors to identify the user:

1.  Knowledge - something you know - for example, your password

2.  Possession - something you have - for example, your cell phone or access to your email account

3.  Inherent - something you are - for example, fingerprints or eye iris

The third factor is out of scope for this particular article We're going to look at adding the second form (possession) to a PowerBuilder application. Specifically, we're What going to use Google Authenticator, an application for mobile devices (and the desktop) that generates time based one time temporary passwords (TOTP) for use with 2FA.

The sample code for this article is available on CodeXchange.

Hola Amigos, Comparto mi curso básico de PowerBuilder en Español. Los temas son los siguientes:

• Introducción a PowerBuilder
• Ambiente de desarrollo de PowerBuilder
• Crear un objeto Aplicación
• Creación de ventanas
• Power Scripts
• Bases de datos relacionales
• Painter de Bases de datos
• Objeto DataWindow
• Conexión a Bases de datos
• Programación orientada a objetos en PowerBuilder
• Construyendo Menus
• Introducción a aplicaciones MDI
• Usando DataWindow Controls y MDI Sheets
• Mostrando datos de la base de datos y declarando User Events
• Conexión de DataWindows a Bases de datos
• Declaración y uso de funciones en ventanas
• Declaración y uso de eventos en ventanas
• Creando instancias de ventanas
• Declarando y usando Funciones
• Modificando, Insertando, y borrando filas
• Salvando cambios en la base de datos
• Creación de Ejecutables

PowerBuilder v12.1, build 7055
Windows 7 32 bit platform
Windows 7 64 bit platform
Windows 10, 64 bit platform


A Sample Inno Setup ".ISS" File
Olan Knight
28-Mar-2019


Once upon a time, long, long ago, we used a product called InstallShield to create the Windows installer for our various products. Over time, the cost for InstallShield became prohibitive, and we eventually settled on using Inno Setup as the replacement tool to create out installers.

You can get the free tool here:    http://www.jrsoftware.org/isinfo.php
The excellent HELP file is here:     http://www.jrsoftware.org/ishelp/   

It's a simple and intuitive tool, but it has some quirks and there is a learning curve. 
Inno Setup uses an ".iss" file as its source code. It compiles that ISS file into the SETUP.EXE for your application, with the file name being up to you.

One of the reasons that people choose to use Git is how easy it is to do branching. Unfortunately, PowerBuilder hasn't implemented it yet. But that doesn't stop you from using this feature if you don't mind taking a few extra steps. This article shows you how you can work on different branches with the help of TortoiseGit. 

In PowerBuilder 2019, 3 new UI themes are provided to control how PowerBuilder’s commonly-used controls render in runtime applications. These new UI themes adopt a “Windows 10” style to enhance the appearances of applications. For detailed description of the themes, see Understanding system themes and Details on the theme settings and their effects.

You can directly control whether an application applies a new UI theme, or provide users with the ability to select a preferred theme by themselves. For details, see Applying a theme.

It is possible for you to modify a system theme through changing the theme template files, or to copy a system theme to create a custom theme. This way, you can further tune the color settings in the theme to your personal preference. For details, see Creating a custom theme.  

You may want to use the UI theme settings together with the PowerBuilder IDE settings and scripting techniques to achieve optimum UI effects. For samples on how to start the work, see Several useful techniques to further adjust your user interface.

POWERBUILDER AND GRAPH DATABASES

Because I could find nothing, anywhere, regarding PowerBuilder (PB) and graph databases (GDB), I thought I’d provide some information following some dabbling with this emerging (well, emerged now) technology.

I developed a keen interest in GDBs after a contracting friend who does some work for me had attended a NEO4J course – he contacted me and said the application I develop would be ideally suited for a GDB.

I looked at NEO4J and quickly realised the code would not fit with the PB my application.  Then another friend advised that MS SQLServer had introduced basic graph DB features in its 2017 version, with enhancements expected to follow.   I gave it a try.

(I should point out that I’m not an experienced programmer - self-taught, I work alone so I can’t learn from peers, too busy on my work to go off and learn new skills, long in the tooth, and need to get a twelve-year-old to change my digital watch at daylight savings.  So the caveat is that experienced programmers may know ways far better than I’ll lay out here.)

With the release of PowerBuilder 2017 a new native method of exporting DataWindows to PDF became available.  There were some enhancements to that functionality added in R2 and in R3 that we're going to look at in this article.