I want to callback an objective c method from c.
//c int gameEngineCallback(int buttontype,void (*callback)(void)) //using above function gameEngineCallback(roundButton,callback); //this works fine but I want to call objective c native method instead of this static void callback(void){ } You Can't Pass Objective c method in C CallBack protoType . but u can redirect to your Objective c Function from the C Call back definition.
EXAMPLE
//Add below line in public declaration of Your Ivar
id myclass; // if ur not Sure about ur class name or u have to redirect to ur delegate class or YourClassName *instanceof class; //(no need to create instance just declartion) // before ur call back fires Assign value for ur IVAr in ur init definition
myclass = self ; or myclass = delegate; // use above IVAR like this in Your C callback Function
static void callback(void) { [myclass Your Function]; } 
YourClassName *myclass;(no need to create instance just declartion) and in viewdidload assign myclass=self; and then call function using myclass instead of 'self' inside ur Callback
callbackparameter needs a function with no parameters and a void return type. You can't pass an Objective-C method.objc_msgsend? stackoverflow.com/questions/2573805/…