On Jan 31, 2012, at 11:31 AM, Howard Moon wrote: > I'd like to add the ability to support Cocoa, by adding a .mm/.h file > with the Cocoa code to display an NSAlert, and call it from here when the > preprocessor symbol MAC_COCOA is defined. I've created the Cocoa files, but > how can I include and call into that code from my .cpp file? Simply adding > either #import or #include of my new .h file causes many many errors, even > though the .mm file itself compiles fine. > > Anyone know of a very simple example showing what I need to do here? > All the examples I find so far show making the call from a .mm file in the > first place, but I can't do that because my code is also compiled for 32-bit > Carbon (and Windows). How do I call from a .cpp file into a .mm file?
Any file that uses Objective-C syntax must be .m/.mm or flagged to be compiled as Objective-C[++]. If you want to avoid Objective-C syntax in your .cpp file, you can either export a C[++] API to wrap the Objective-C code (the .mm's header would only export C[++] functionality when __OBJC__ is not defined), otherwise you should probably rename your .cpp file to .mm. -- David Duncan _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
