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- Newsgroups: comp.sys.next.programmer
- Path: sparky!uunet!stanford.edu!leland.Stanford.EDU!jessica.stanford.edu!brod
- From: brod@jessica.stanford.edu (Brodie Lockard)
- Subject: Re: NeXT Concepts.
- Message-ID: <1992Aug17.044849.27255@leland.Stanford.EDU>
- Keywords: Objetive-C, super, NeXT Window Server, MACH.
- Sender: news@leland.Stanford.EDU (Mr News)
- Organization: Academic Information Resources
- References: <900@tdat.teradata.COM>
- Distribution: usa
- Date: Mon, 17 Aug 92 04:48:49 GMT
- Lines: 41
-
- In article <900@tdat.teradata.COM> cyk@tos28.teradata.com () writes:
-
- > 1] Can a client of a NeXT Step window server be running
- > on a remote host? If this is possible, under which
- > document is this capability documented?
-
- If you mean "Can an app running on one NeXT display on another?" then yes.
- In the Preferences app on the displaying machine, under Unix Expert, check
- "Public Window Server," log out, and log back in. Then, open a shell on
- the displaying machine, rlogin to the machine where the app is and type
-
- appmachine>TheApp -NXHost displaymachine
-
- After a bit, a miniwindow will appear at the bottom of displaymachine's
- screen, representing the app. Double-click it.
-
- > 2] Does NeXT Step take advantage of MACH's threading,
- > virtual memory management and messaging facilities?
-
- Dunno.
-
- > 3] In Concepts, there is an example, illustrating the use
- > of SUPER in Objective-C, in the following way:
-
- ...
- > bInstance = [super new];
- ...
- >
- > The semantics illustrated above seems to imply that
- > bInstance will be pointing an instance of A since
- > "super" causes the invokataion of A's new.
- >
- > Will class object B return a structure, which properly
- > represents the newly created instance of B, if B has
- > additional instance variables other than A's?
-
- bInstance will be pointing to an instance of B, which is exactly like an
- instance of A, except that it has whatever additional instance variables
- and methods you've declared in B.h.
-
- Brodie Lockard brod@jessica.stanford.edu
-