mxmora@unix.SRI.COM (Matt Mora) (03/16/90)
I am in the process of writing a library routine for
Quickbasic that will allow you to call XCMD's & and
XFCN's from any quickbasic program. The part that is tripping
me up is the callback part.
For example: (using the code below supplied by apple's XCMDUtils)
function StringMatch;
begin
with paramPtr^ do
begin
inArgs[1] := ORD(@pattern);
inArgs[2] := ORD(target);
request := xreqStringMatch;
DoJsr(entryPoint);
StringMatch := Ptr(outArgs[1]);
end;
end;
where DoJsr is:
PROCEDURE DoJsr (addr : ProcPtr);
INLINE
$205F, $4E90; {MOVEA.L (A7)+,A0}
{JSR (A0)}
When the library code starts I set entrypoint
to be the address of the procdure to handle the callback.
for example
paramPtr^.entryPoint:=@CallbackHandler;
How do I return control to the xcmd from my
callbackhandler? RTS?
Now when I actually call the xcmd after filling in
then paramptr block, can I just do:
myXCmdhndl:=GetNamedResource('XCMD',Xcmdname);
if myXCmdHndl<> nil then
begin
Hlock(myXCmdHndl);
DoJSR(myXCmdHndl^^);
HunLock(myXCmdHndl);
ReleaseResource(myXCmdHndl);
end;
end;
or will this blow up in my face :-)
And some other random questions.
What exactly is a zero string. Is that a C string?
And when I do ZeroToPas, Do I truncate the string if its > 255?
Thanks for any clues you can give me.
--
___________________________________________________________
Matthew Mora
SRI International mxmora@unix.sri.com
___________________________________________________________jg23+@andrew.cmu.edu (John Robert Gray) (08/11/90)
Hi, I just started programming in Macintosh and I got the book Inside Macintosh all 5 volume. On p 17 there is a program but what is it in? Pascal, Think C or assembly language? Any help would be appreciated. John Gray
stevec@Apple.COM (Steve Christensen) (08/13/90)
In article <0akn9bW00WB7AVM0lD@andrew.cmu.edu> John Robert Gray writes: > Hi, I just started programming in Macintosh and I got the book Inside >Macintosh all 5 volume. On p 17 there is a program but what is it in? >Pascal, Think C or assembly language? Any help would be appreciated. It's in Lisa (you remember that computer, right?) Pascal. You can get rid of the {$X-} and {$U-} compiler commands as well as the {$U ...}'s in the USES... steve -- ____________________________________________________________________ Steve Christensen Internet: stevec@goofy.apple.com Apple Computer, Inc. AppleLink: STEVEC 20525 Mariani Ave, MS 81-CS CompuServe: 76174,1712 Cupertino, CA 95014 "You just contradicted me." "No I didn't." ____________________________________________________________________
francis@arthur.uchicago.edu (Francis Stracke) (09/27/90)
In article <0akn9bW00WB7AVM0lD@andrew.cmu.edu> jg23+@andrew.cmu.edu (John Robert Gray) writes: > Hi, I just started programming in Macintosh and I got the book Inside >Macintosh all 5 volume. On p 17 there is a program but what is it in? >Pascal, Think C or assembly language? Any help would be appreciated. 1: p 17 of WHICH VOLUME??? (Surely you're not claiming to have all 5 bound together?) 2: It's not in C. IM does not deal with C. 3: If it puts an _ in front of the names of Toolbox calls, it's ML.
resnick@cogsci.uiuc.edu (Pete Resnick) (09/27/90)
francis@arthur.uchicago.edu (Francis Stracke) writes: >In article <0akn9bW00WB7AVM0lD@andrew.cmu.edu> jg23+@andrew.cmu.edu (John Robert Gray) writes: >> Hi, I just started programming in Macintosh and I got the book Inside >>Macintosh all 5 volume. On p 17 there is a program but what is it in? >>Pascal, Think C or assembly language? Any help would be appreciated. >1: p 17 of WHICH VOLUME??? (Surely you're not claiming to have all 5 bound >together?) >2: It's not in C. IM does not deal with C. >3: If it puts an _ in front of the names of Toolbox calls, it's ML. Francis, has anyone ever told you you were rude? Of course what John is asking about is the sample program on page 17 of Volume 1, and it is in Pascal, which was the language that the original Macintosh's had available. Sorry for Francis's rudeness John. Pascal is the language. pr -- Pete Resnick (...so what is a mojo, and why would one be rising?) Graduate assistant - Philosophy Department, Gregory Hall, UIUC System manager - Cognitive Science Group, Beckman Institute, UIUC Internet/ARPAnet/EDUnet : resnick@cogsci.uiuc.edu BITNET (if no other way) : FREE0285@UIUCVMD
carlton@husc8.harvard.edu (david carlton) (09/27/90)
In article <1990Sep26.220029.16514@midway.uchicago.edu> francis@arthur.uchicago.edu (Francis Stracke) writes: In article <0akn9bW00WB7AVM0lD@andrew.cmu.edu> jg23+@andrew.cmu.edu (John Robert Gray) writes: > Hi, I just started programming in Macintosh and I got the book Inside >Macintosh all 5 volume. On p 17 there is a program but what is it in? >Pascal, Think C or assembly language? Any help would be appreciated. 1: p 17 of WHICH VOLUME??? (Surely you're not claiming to have all 5 bound together?) 2: It's not in C. IM does not deal with C. 3: If it puts an _ in front of the names of Toolbox calls, it's ML. ML? everybody's favorite (almost) functional programming language? gee. standard ML? edinburgh ML? didn't realize that apple had adopted it as a standard programming language. oh, you mean machine language? sorry - i didn't realize that. well, i hate to tell you, but you didn't get this right, either. you almost certainly mean assembly language - machine language is basically a bunch of numbers, certainly not underscores. assembly language is a very close cousin, perhaps, but hardly the same thing. sheesh. if you're going to be a pedant, could you at least try a bit harder? (and, for the original poster's sake, the language was pascal.) on a more serious note, does anybody actually know of a version of ML that exists for the mac? david carlton carlton@husc9.harvard.edu B5 f- t w- r-
b_murphy@fennel.cc.uwa.oz.au (10/01/90)
>> Hi, I just started programming in Macintosh and I got the book Inside >> Macintosh all 5 volume. On p 17 there is a program but what is it in? >> Pascal, Think C or assembly language? Any help would be appreciated. > > 1: p 17 of WHICH VOLUME??? (Surely you're not claiming to have all 5 bound > together?) Give the kid a break. IM 1 > 2: It's not in C. IM does not deal with C. So answer the question... It's in Pascal, to be precise Lisa Pascal. (It actually says so in the program ;-) > 3: If it puts an _ in front of the names of Toolbox calls, it's ML. Just to be picky here, *what's* ML ? I know how it is to start on the Mac. I did so a *while* ago, just keep asking questions, we do too. -- -o (short for On-no) ()/)/)() can be r e a c h e d at B_MURPHY@VAXA.UWA.OZ.AU _____________________________________________________________________ The net never sleeps, come to think of it, do I ever? ----> Thinking is dangerous, subversive and leads you astray. <----