How to pass Objective C's class instance to c++ method?

Question

I need to pass Objective C object instance to C++ method trough params. How I can do it?

This code doesn't work, and I know it. I'm just showing what I want.

MyObjcClass *instance = [[MyObjcClass alloc] init];
myCppClassInstance.myCppMethod(instance);

KIDdAe · Accepted Answer · 2013-10-18 14:35:43Z

1

class is a keyword, so it won't work I agree. But for me there are no other issue in your sample code.

Juste declare your cpp method

void myCppMethod(MyObjcClass *obj) {

}

and use it like you did

MyObjcClass *obj = [[MyObjcClass alloc] init];
myCppMethod(obj);

answered Oct 18, 2013 at 14:35

KIDdAe

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4 Comments

class word was to show example. of cource I know it :D. But your code doesn't work

fail at compile or runtime ?

it doesn't see MyObcClass header in myCppMethod's class. Check updated code please

Remember to put .mm extension to file using c++ And try : myCppClassInstance->myCppMethod(instance); :)