Removing the Proxy Icon in the bar of my mac app

I was wondering how to remove the proxy icon in the bar of my mac app. I've added an image so you can see what Icon I'm talk开发者_开发知识库ing about

Thank you in advance!

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The icon is included in the titlebar of the application automatically when you've created an NSDocument based application.

You can remove the proxy icon by returning nil from the -[NSWindow representedURL] method. This could be accomplished by using a custom NSWindow subclass with the method overridden; or simply setting the property to nil at the appropriate times.

Be aware, you might loose other functionality you normally get for free by changing this behavior, such as the dirty/clean indicator for the window, or some prompting to save when closing the window.

Alternatively, if you wanted a different image, you could use:

[[NSWindow standardWindowButton:NSWindowDocumentIconButton] setImage:customImage]

Then implement -[id<NSWindowDelegate> window:shouldPopUpDocumentPathMenu:] to return NO to prevent the popup menu from appearing.

If your application isn't actually document based, or the window doesn't represent a document, consider refactoring to present this window a different way, rather than being a document window.

There is some additional information in the Cocoa window documentation.