Syntax to return an instance in Objective-C

Question

Hi, can u please help me how to return an instance of a function which is inherited through interface in Objective-C Language?

@protocol prot1

{

public IDispManager getDispManager;

}
@end
@interface A: NSObject (prot1)

{

}
@end

@implementation A

{
   /**
     * Provides access to the disp manager.
     * @return Instance of the disp manager.
     */
   public IDispManager getDispManager;

   // how to return an instance of this method
}
 @end

Plssss help me out???????

Answer 1

The class would have to hold an object of that class and provide a method to return it. Here's an example along the lines of what you wanted to write:

@protocol Proto
- (DisplayManager *)displayManager;
@end

@interface Foo : NSObject <Proto> {
    DisplayManager *displayManager;
}
- (DisplayManager *)displayManager;
@end

@implementation Foo
- (DisplayManager *)displayManager {
    return [[displayManager retain] autorelease];
}
@end

Though this probably won't make sense to you without understanding the language more fully.