How to access to an object inside a C function

Question

I need to get access to an object inside a C function similar to this few code

@interface MixerHostAudio ()  <UIApplicationDelegate>
@property (readwrite) int *alternativeOutput;
@end

@implementation MyCode
@synthesize alternative

void audioInputAvailable () {
   alternative=1;
}

I get this error: " 'Use of undeclared identifier 'alternative' "

Any ideas about how can i solve it ?

Answer 1

You have to make your "MyCode" object available somewhere for your C glue function to pick up. For example, if you have a pointer to your MyCode object...

void audioInputAvailable(MyCode *myCodeObject){
   myCodeObject.alternative = 1;
}