I'm been reading the documentation quit a bit but haven't found the
answer.
My problem is that I don't really understand how containers work in
Cocoa,
I know NSView, but how do I add an object to it programmatically,
say a NSImage?
The term "container" is usually used to reference things like
arrays and dictionaries (NSArray / NSMutableArray and NSDictionary /
NSMutableDictionary, respectively).
The view hierarchy is a different animal. What have you searched
the documentation for? The appropriately-named "Views Programming
Guide for Cocoa" (referenced from the top of the NSView API reference)
has a page even more appropriately-named, "Working with the View
Hierarchy":
http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaViewsGuide/WorkingWithAViewHierarchy/chapter_5_section_1.html
The very first page of that section points to a subsection titled
(most appropriately of all), "Adding and Removing Views from a
Hierarchy ".
Now as far as an NSImage goes, you don't "add" images to views.
NSImage is a model-layer object (search the Cocoa documentation for
"MVC" or "Model View Controller"). You typically represent things
graphically with a view. Therefore, NSImageView (a subclass of NSView,
look it up in the documentation for usage details) accepts an NSImage
instance. You can give the image view an image and add the image view
to whatever parent view you wish -- adding an image view to another
view is not the same thing as specifying the image that the image view
displays.
--
I.S.
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