Question

If you have a C pointer which was defined in a method and are trying to return it from an object method in Objective C, what do you place as the return object type for the method?

For example, I am using code that converts a UIImage into an RGBA image map (as seen here) – but the code stores a C pointer to the memory that is unclear how to return.

- (??what goes here??) returnTextureRGB
{
  // ... other code ...
  void *imageData = malloc(height*width *r);
  // ... other code ...
  return(imageData);
}

What is the correct object type to declare being returned?

Answer 1

I don’t know why is this related to C#, however Objective-C is a superset of C, thus every C syntax is also a valid Objective-C syntax.

Just place void* as return type.