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Using C++11 Lambdas As Qt Slots

I have an old codebase I started writing using the Qt 3.x framework—a little while before Qt4 was released. It’s still alive! I still work on it, keeping up-to-date with Qt and C++ as much as possible, and I still ship the product. Over the years I have moved the codebase along through Qt4 to […]


Compiling OpenCV On Mac OS X 10.6

A couple of years ago I needed to do some basic image processing and found OpenCV. OpenCV is a BSD-licensed library for digital image processing which implements several hundred computer vision algorithms. Unfortunately compiling it on the Mac was not straightforward—requiring Fink or MacPorts—and the one existing Mac framework was out of date and no […]


Point Cloud Library on Mac OS X: A Build Diary

I’ve been using and contributing to various open source projects for almost 20 years. I love the fact that we can leverage each other’s work and help other developers save time instead of reinventing the wheel or fighting the same problem a thousand times over. Open source tools and libraries make what I do possible.  […]


QString::toStdString, QString::fromStdString, and -no-stl

I use the Qt library in my day-to-day development work. I build my Qt libraries directly from the git repository and they are configured specifically for my projects. On the Mac OS X side, this is the command line I use:

The Windows one is similar:

You will notice that I am explicitly […]


qmake and the Info.plist File

I use the Qt library and qmake to build my bloodstain pattern analysis software. qmake is a great tool for cross-platform development because it lets you use one relatively succinct description [a .pro file] to generate Xcode projects, MSVC projects, and makefiles. On the Mac OS X side of things, I use one qmake .pro […]