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    <p>I think that by default, you should aim to separate business logic from presentation (GUI) code. In web development, the most commonly used pattern is <a href="http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller" rel="nofollow">MVC</a>, and it's principles apply equally to native applications.</p> <p>However, this separation might be more difficult to achieve in native applications. Mainly because there are no frameworks such as Symfony, which have already solved these architectural problems, and make it easy to keep UI and business code separate by following the established conventions. I have't used Qt but from what I know it's mainly a GUI toolkit - models, views and controllers are not as well-defined and integrated.</p> <p>Depending on the nature of the needed interface, a simple OpenGL GUI might suffice. This is what I did for a <a href="https://github.com/mihai-rotaru/wf-viz/tree/develop" rel="nofollow">simple uni project</a>. The project needed to display a shapefile colored according to statistics in an XML file. I created a number of GUI widgets - button, label etc, and a custom map widget which encapsulates "business logic". Perhaps I should have "cleansed" the map widget, making it as generic as possible, and move all business logic to a separate library, but considering the business layer was very thin I thought the added complexity would outweigh the benefits.</p> <p>Another factor is your skill-set - current, and areas which you want to improve. I was more interested in OpenGL and freeglut, then in learning Qt. If I had known Qt, I would have used that.</p>
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    1. POBest Practise for GUI development for vanilla C++ application
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    1. USMihai Rotaru
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    1. COdid you boost to connect your gui and logic?
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    2. CO@user21071987 I just used function pointers to implement events - not very smart, but simple; I was planning on switching to [`boost::signals2`](http://www.boost.org/doc/libs/1_54_0/doc/html/signals2.html), which I think is the correct solution for such tasks.
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