In this part of the tutorial, we are going to design a Cocoa UI in order to draw the spectrum graph computed by our unit, in which we'll create widgets so as to configure the FFT analysis.
Why using Cocoa? Well, for two reasons: I didn't want to introduce a too complex API in this tutorial (such as OpenGL), and I would like to show you how to mix C++ and Objective-C in the same XCode project. Don't worry, it doesn't bother if you're not experienced with Objective-C: we'll make a straightforward use of it and we'll clearly explain all the interactions between our GUI classes and our C++ code.
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Sample & Hold source code and articles by Fred Ghilini is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.