#import <Cocoa/Cocoa.h>
 
@protocol MyClassWithDelegaet <NSObject>
@optional
- (void)myDelegateMethod:(NSString*)tsst;
@end
 
@interface MyClassWithDelegate : NSView {
	id <MyClassWithDelegate> delegate;
}
 
@property (nonatomic, assign) id <MyClassWithDelegate> delegate;
 
@end

#import "MyClassWithDelegate.h"
 
@implementation MainView
 
@synthesize delegate;
 
- (void)anyEvent:(NSEvent *)e { // an event or something like that
	// send delegate
	[[self delegate] myDelegateMethod:@"sss"];
}
 
@end