Where did my QPrinters go?

Are you already migrating your applications from Qt 4.x to latest Qt 5.0 framework just released? And do your applications involve the use QPrinter class? If you answered YES to both questions, make you a favor to avoid further building problems...

Raspberry Pi board + Qt + KDE

As Nokia offered to sponsor some Raspberry Pis for the KDE project, they asked about proposals for using such devices. It turned out that my idea was selected, so here I'm waiting for the board to arrive. Thanks Nokia for sponsoring those RPis!

Long life to Qt

Digia already completed the acquisition of Qt. Previously announced in August 2012, it means the beginning of a really new era for these cross-platform libraries and development IDE, one more in its long and sucessful path so far.

How to evaluate variables in project (.pro) files

If you need to evaluate a variable inside a project file (.pro) the variable must be enclosed in curly braces.

Testing for Endian-ness (byte order)

Although very unlikely that you need to test endian-ness (or byte order) in Qt applications, you may take advantage of some macros available to help knowing how the system the application is running under will store data in memory.

Building Poppler Qt4 Wrapper

Poppler is a PDF rendering library used by several programs (i.e. evince, Oular, LocoPDF, etc.) that comes with multiple frontends (APIs), including a Qt 4 wrapper. As I wanted to develop a PDF viewer for DFF (Digital Forensics Framework) I decided to build latest Poppler version from scratch under Linux. Here are some notes I collected from such a task.

Qt-ish external libraries: getting serial port and pcap functionality into Qt applications

The Qt API is well known for providing a long list of classes and functions that span from GUI to network support, along with to support for XML, SQL and OpenGL. But even with such an array of modules, from time to time a Qt developer may face some issues dealing with specific domains not cover by the Qt framework. Fortunately, some work have been done outside the framework itself that allow us to get support for serial port accces and the Pcap library.