Hi, Any hints on how to make a supersimple Mac OS X 64bit Cocoa app without XCode but directly from gsc in the console, like, opening a window and registering keystrokes in it? This would be both regarding the sourcecode to implement it and the cc-options: for making compile-file deliver for it. For cc-options I guess "-x objective-c" as pointed out by Alex is sufficient. Brgds, Mikael