On Nov 11, 2011, at 5:49 PM, Nathan Sims wrote: > Newb question. I need to create an OS X Cocoa library that is going to be > called from a C program. The C program's interface will be simple, along the > lines of: > > retval=get_float_data(&float1,&float2); > > where get_float_data() is a function that resides in the Cocoa library and > invokes Objc code to generate and return two float values to the caller. > > I'm unclear on how to architect this. Can a C function invoke Objc methods? > (OSX 10.6.8, Xcode 3.2.6)
Yes. Implement get_float_data() in an Objective-C file. It will be free to call whatever Objective-C methods it wants. Several libraries on OS X do exactly this, with an Objective-C implementation behind a C interface. -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com