So, in order to create 100% native Cocoa applications in Delphi XE2 you will have to master the following:
Create simple OSX console application
Learn how to create OSX console application in Delphi XE2 and debug it using PAServer (configure the environment, etc)
Enhance OSX console Delphi application w/ simple NSApplication & NSApplicationDelegate code
Learn the very basic of Cocoa: NSApplication & NSApplicationDelegate class/protocol — I recommend to study SampleNibblesApp source code thoroughtly
Learn Cocoa, Xcode and how to design your interface in Xcode
This is the most hard -- you must learn some Objective-C basics, Cocoa hierarchy, Xcode interface and how to create GUI in Xcode. I recommend to review AppleProgramming YouTube channel from the very beginning till very end.
Enhance OSX Delphi application w/ loading of compiled NIBs
You must be able to design Cocoa GUI in Xcode, compile XIB to NIB, write code in Delphi to load that NIB, implement IBOutlet and IBAction handlers in Delphi.
Fuente:
http://www.gerixsoft.com/blog/delphi...out-firemonkey