#import "MyDocument.h" #import "MyWindowController.h" @implementation MyDocument // ---------------------------------------------------------------------------- - (void)makeWindowControllers { // Create the window controller and keep a reference to it. MyWindowController* newWindowController = [[MyWindowController alloc] init]; [newWindowController setShouldCloseDocument:YES]; [self addWindowController:newWindowController]; } // ---------------------------------------------------------------------------- - (nullable NSData*)dataOfType:(NSString*)typeName error:(NSError**)outError { return nil; } // ---------------------------------------------------------------------------- - (BOOL)readFromData:(NSData*)data ofType:(NSString*)typeName error:(NSError**)outError { return YES; } @end