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Re: ControlRef vs. HIViewRef vs. HIObjectRef


On Jan 30, 2007, at 5:08 PM, Laurence Harris wrote:

WindowRefs, MenuRefs and HIViewRefs are all HIObjectRefs internally and can be cast appropriately. In the early days of HIObjects each sub type was initially type defined to an HIObjectRef. We noticed there was an issue with C++ routines that differed in signature only by the object type passed in (window, menu, view). In order to preserve this behavior we had to type define them separately but rest assured all windows, menus and views can be used in HIObject APIs.

As I read the OP's question, this doesn't answer it. He asked if one might have an HIObjectRef that's not an HIViewRef, and you've confirmed that all HIViewRefs are HIObjectRefs. But isn't a WindowRef an HIObjectRef that isn't an HIViewRef?

Larry

"WindowRefs, MenuRefs and HIViewRefs are all HIObjectRefs internally and can be cast appropriately." Don't forget to read those headers.. er.. first sentences. ; )
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References: 
 >ControlRef vs. HIViewRef vs. HIObjectRef (From: Rick Mann <email@hidden>)
 >Re: ControlRef vs. HIViewRef vs. HIObjectRef (From: Bryan Prusha <email@hidden>)
 >Re: ControlRef vs. HIViewRef vs. HIObjectRef (From: Laurence Harris <email@hidden>)



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