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Asked: 2026-05-11T12:08:01+00:00

my .h file is as follows #import <Foundation/Foundation.h> @interface MyClass : NSObject { }

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my .h file is as follows

#import <Foundation/Foundation.h>  @interface MyClass : NSObject { } - (void) addWidget: (Widget*)aWidget; @end

For sake of example, Widget is just some simple class that only holds a couple of strings. Apparently, either i’m doing something wrong or am just spoiled by Java / C# because when I try building, the compiler tells me that i can’t use an object as a parameter to a method.

Does anyone know what I’m doing wrong? Or do objective-c methods not accept complex types? (say it ain’t so!)

[UPDATE] Ok this is odd.. but I just selected ‘clean’ from the Build menu and now the error went away.. ah.. such misdirection on my part.

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1 Answer

  1. The only thing wrong with that code is that Widget isn’t declared anywhere. You should either #import 'Widget.h' or put @class Widget; before the type is used.

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