On Jun 16, 2008, at 7:52 PM, William Squires wrote:
Dumb question expecting a dumb answer here...
1) I know the First Responder sets which control in a window gets
the focus, but what about if you app has multiple windows, each of
which has several controls which could get the focus (when the
window is frontmost)? How is this handled if there's only one First
Responder?
See the Cocoa Event-Handling Guide, in particular the Event
Architecture chapter and its section about Responders and the
Responder Chain:
http://developer.apple.com/documentation/Cocoa/Conceptual/EventOverview/
http://developer.apple.com/documentation/Cocoa/Conceptual/
EventOverview/EventArchitecture/chapter_2_section_5.html
http://developer.apple.com/documentation/Cocoa/Conceptual/
EventOverview/EventArchitecture/chapter_2_section_6.html
While each window may have its own first responder, there is only
ever one first responder for any given message.
2) How does one set the tab order for fields in a data-entry form
type of window? (where you have several NSTextFields, NSButtons,
etc...)
Each view has a "nextKeyView" outlet. You can connect (in IB or in
code) that outlet from one view to another view. That determines
where focus goes when you hit Tab.
http://developer.apple.com/documentation/DeveloperTools/Conceptual/
IB_UserGuide/AdvancedTechniques/chapter_9_section_2.html
Cheers,
Ken
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