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    <p>chances are, this will not go smoothly if you don't know c++ or similarly, cocoa.</p> <p>otherwise, most of the transition will be monotonous, if you <em>do</em> know what you're doing. otherwise, prepare to learn a few things about objc.</p> <p>first: don't bother converting a functioning c++ program's implementation to objc. it's a huge waste of time. you just wrap, bind, and alter the program to operate in that context. you don't have to write everything in objc.</p> <p>second: you'll have to write some objc bindings/wrappers to use the c++ program. you'll have some wrapping to do, particularly for the ui elements and user events.</p> <p>third: sources should compile as-is. you just add them to your new cocoa template project and gcc will compile it as a cpp file by default if it has the a recognized c++ extension. to use c++ and objc, use objc++ <code>FILENAME.mm</code> (you could also use <code>.M</code>, but that is not supported as well). even better, put the original cpp sources in a separate library, which the app links to.</p> <p>fourth: now that you have a cocoa project template and compiling cpp sources, add the wrappers/bindings so the cocoa events/drawing performs in that context. based on your example code, your starting point uses Open GL so you'll have to use something like an NSOpenGLView if you want a Cocoa app. what exactly you'll need to implement depends on the project.</p> <p>your main function should call NSApplicationMain, then your initial entries for writing the bindings to the c++ code will likely be event handling, NSWindow, NSView, and maybe NSApplication.</p> <p>if you're new to objc, you'll probably have a bit of ramp-up.</p>
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    1. POHow do I convert a complex C++ XCode project to a Cocoa app?
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