Calling Objective C code within C++ using Cocoa
Author
Is it possible to call Obj-C code inside C++ code? How would I go about this?
For instance i have a MessageBox.cpp that uses the windows MessageBox function if copiling for windows. I would like it to Compile for MAC using the Cocoa NSAlert.
I am doing:
#if WINDOWS
#elif MAC
#endif
Thanks :)
You should be able to use the syntax directly using Objective-C++ (basically Objective-C ∪ C++). See this site for details.
Author
Thankyou for both your replies!
Petewood - I will keep in mind the swiss cheese code that can come with #ifdef and try to use it correctly. I am staying away from OS API as much as possible (using SDL and OpenGL) so I think that it will be ok for now.
igni - Thanks for the link to that article. It is exactly what I need to solve my issue.
Petewood - I will keep in mind the swiss cheese code that can come with #ifdef and try to use it correctly. I am staying away from OS API as much as possible (using SDL and OpenGL) so I think that it will be ok for now.
igni - Thanks for the link to that article. It is exactly what I need to solve my issue.
Author
I am not quite understanding Xcode Frameworks. I have added the Appkit framework to my project so that I could use NSAlert.
However my Compiler says that NSAlert is undefined.
NSAlert *alert = [[[NSAlert alloc] init] autorelease];
Is it because im doing something wrong with mixing ObjC and C++? This is a C++ file and is mostly C++ code except for this.
However my Compiler says that NSAlert is undefined.
NSAlert *alert = [[[NSAlert alloc] init] autorelease];
Is it because im doing something wrong with mixing ObjC and C++? This is a C++ file and is mostly C++ code except for this.
are you importing the framework correctly. We build our apps on C++ code that is shared between the PC and MAC. with the mac app written in Objective C code. We have no problems with it.
Error's like this are ususally from fortetting to import a header. or linking to the wrong framework
Cheers
Chris
Error's like this are ususally from fortetting to import a header. or linking to the wrong framework
Cheers
Chris
Author
Thanks Chris. I did not understand that adding a framework wasnt all I needed. You are right that I was missing the proper headers.
For this to work I also had to change to .mm extention.
For this to work I also had to change to .mm extention.
Oh yes, I should have reminded you about the .mm extension. I always found it "hacky" that apple would compile a file based on its extension, while the whole OS does its best to sheild the user from the extention of a file.
Glad you got it to work.
Cheers
Chris
Glad you got it to work.
Cheers
Chris
Author
Since the extention must be .mm, and my VC++6 wants .cpp, I guess I need different files for each compiler?
I was hoping to have only one file and use:
#if WINDOWS
#elif MAC
#endif
Is there a way to embedd the obj-C code in the cpp file so I can use it with VC++6?
Mabe the best solution is to have two files? What do you do Chris?
[Edited by - FruitJuice27 on November 25, 2004 2:46:05 PM]
I was hoping to have only one file and use:
#if WINDOWS
#elif MAC
#endif
Is there a way to embedd the obj-C code in the cpp file so I can use it with VC++6?
Mabe the best solution is to have two files? What do you do Chris?
[Edited by - FruitJuice27 on November 25, 2004 2:46:05 PM]
This topic is closed to new replies.
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