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SubViews and Events

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SubViews and Events

Subject: SubViews and Events
From: Erik Buck <email@hidden>
Date: Tue, 15 Aug 2006 19:44:51 -0400

There is generally no problem with programatically creating instances of subclasses of NSView. Are you maybe attempting to initialize an instance without calling the super class's designated initializer, - initWithFrame: ?

When a view is added as a sub-view of another view via the - addSubview: method, the sub view is layered above the super view. The subview receives mouse events before the superview. The subview is automatically in the responder chain as long as its super view is in the responder chain.

http://developer.apple.com/documentation/Cocoa/Conceptual/ CocoaViewsGuide/WorkingWithAViewHierarchy/chapter_4_section_5.html

If you want to change normal subview interaction with the mouse, implement the – hitTest: method. If a view returns nil from - hitTest:, the mouse event will fall through to the super view as if the subview under the mouse was not even there.

My suggestion is that you read up on the view hierarchy and responder chain. There are also many many examples available for you to analyze. _______________________________________________ Do not post admin requests to the list. They will be ignored. Cocoa-dev mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden Follow-Ups: Re: SubViews and Events From: Jerrod Fowkes <email@hidden> Prev by Date: Re: Unit testing and Xcode integration Next by Date: Re: X-Code: multifile Global find/replace? Previous by thread: Re: SubViews and Events Next by thread: Re: SubViews and Events Index(es): Date Thread