adding a delegate to a class

[Angelo Chen]

Hi,

I have a code like this:

@interface BackgroundObj : NSObject
{
        Controller *mc;
}

- (void) sayHi;


@implementation BackgroundObj

- (void) sayHi
{
        [mc showText:@"Hi"];
}
@end

As you can see, the code is hard coded to use class Controller, can not be used 
with any other object, I'd like to add a delegate which will have a showText 
method, sayHi method will just call the delegate instead of hard coded 
Controller, any idea how to add delegates to this object? or, any tutorials for 
this? Thanks,

Angelo




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