Re: Clickable question/answer numbers (Otared Kavian)

[Willi Egger <context@boede.nl>]

Otared,

thank you for this nice example!

Willi
> On 7 Nov 2016, at 04:21, Otared Kavian <otared@gmail.com> wrote:
> 
> Dear Dalyoung,
> 
> I guess you are typesetting the wrong file, or you have put the last code I sent into a file which contains something of the previous codes…
> Indeed in the last file I sent (which I am sending again at the end of this reply) does not contain the command \myanswer… which appears in your error message.
> 
> Please test the code below and let me know if you encunter a problem.
> 
> Best regards: OK
> %%%% begin interactive-question-answer.tex
> %%%% Here, following Wolfgang Schuster's ideas, 
> %%%% we define some macros allowing to couple
> %%%% Questions and Answers in an automatic way
> %%%% Upon clicking on an interactive title for Question or Answer
> %%%% one goes to the corresponding Answer or Question
> 
> \setupinteraction[state=start]
> 
> % We define two counters which follow the numbers
> % appearing in Question and Answer
> 
> \newcounter\QuestionCounter
> \newcounter\AnswerCounter
> 
> % We create two commands to be used in the
> % enumeration environments
> % Note that the check for trial typestting 
> % \doifnotmode{*trialtypesetting}
> % is necessary in order to avoid unwanted incrementation
> \define[1]\QuestionTextCommand
>   {\doifnotmode{*trialtypesetting}
>      {\doglobal\increment\QuestionCounter
>       \pagereference[question:\QuestionCounter]}%
>    \doifreferencefoundelse{answer:\QuestionCounter}
>      {\goto{#1}[answer:\QuestionCounter]}
>      {#1}}
> 
> \define[1]\AnswerTextCommand
>   {\doifnotmode{*trialtypesetting}
>      {\doglobal\increment\AnswerCounter
>       \pagereference[answer:\AnswerCounter]}%
>    \doifreferencefoundelse{question:\AnswerCounter}
>      {\goto{#1}[question:\AnswerCounter]}
>      {#1}}
> 
> % We define here two enumeration environments for
> % Questions and Answers
> \defineenumeration[question]
> 	[text=Question,
> 	headcommand=\QuestionTextCommand,
> 	number=yes,
> 	prefix=yes,
> 	prefixsegments=chapter,
> 	coupling=answer]
> 
> \defineenumeration[answer]
> 	[text=Answer,
> 	headcommand=\AnswerTextCommand,
> 	number=yes,
> 	prefix=yes,
> 	prefixsegments=chapter,
> 	coupling=question]
> 
> % Each question is followed immediately by its answer.
> % The answers are put in a block which will be used later
> \defineblock[answer]
> \hideblocks[answer]
> 
> % We define a command used after a  
> % Question for which no Answer is provided
> % Since the block commands 
> % \beginanswer ... \endanswer
> % cannot be used directly in a macro definition
> % we use a trick...
> % In the buffer the two counters associated to Answer
> % are incremented...
> \startbuffer[noanswer]
>     \beginanswer
>     \doglobal\increment\AnswerCounter
>     \incrementcounter[answer]
>     \endanswer
> \stopbuffer
> 
> % ...and then the above buffer is invoked
> \define\noanswer
>   {\getbuffer[noanswer]}
> 
> % example of use:
> \starttext
> \startchapter[title=Questions]
> 
> \startquestion[q:1]
> Prove that ${\rm e}\sim 2.73$ is irrational.
>     
> This is the first question, with its own reference, for later use.
> \stopquestion
>     
> \beginanswer
> \startanswer
> This is the answer to the first question (to \in{Question}[q:1]).
> \stopanswer
> \endanswer
> 
> \startquestion 
> This is the second question, without its own reference.
> \stopquestion
>     
> \beginanswer
> \startanswer[a:Test]
> This is the answer to the second question. 
> 
> (Note that this answer has a reference named \type{a:Test}).
> \stopanswer
> \endanswer
> 
> \startquestion[q:Obvious]
> This is the third question, an easy one, without a given solution.
> \stopquestion
> 
> % we increment here the counters for Answer
> \noanswer
> 
> \startquestion[q:2]
> This is the fourth question with its own reference.
> \stopquestion
> 
> \beginanswer
> \startanswer
> This is the answer to the fourth question: use the result of \in{Question}[q:1].
> \stopanswer
> \endanswer
> 
> \startquestion 
> This is the fifth question, without its own reference. 
> 
> ({\it Hint:} look again at \in{Question}[q:Obvious]).
> \stopquestion
>     
> \beginanswer
> \startanswer
> This is the answer to the fifth question. Read again \in{Answer}[a:Test].
> \stopanswer
> \endanswer  
> 
> \stopchapter
> 
> % Here we say ownnumber=1, in order to match the prefix 
> % of numbers associated to Answer
> \startchapter[ownnumber=1,title=Answers and solutions]
> \useblocks[answer]
> \stopchapter
> 
> \stoptext
> %%%% end interactive-question-answer.tex
> 
> 
> 
> 
>> On 6 Nov 2016, at 23:43, Jeong Dal <haksan@me.com> wrote:
>> 
>> Dear Otared,
>> 
>> Hi,
>> I run the given  code and got an error message as following.
>> 
>> tex error       > tex error on line 1 in file virtual://block.answer.2: ! Undefined control sequence
>> 
>> l.1 \myanswer
>>            [Q:test]
>> 
>> <empty file>
>> 
>> Would you please tell me how to avoid such an error?
>> It seems to me that you don’t have an error.
>> 
>> I am running minimal(beta) in OSX.
>> 
>> Thank you.
>> 
>> Best regards,
>> 
>> Dalyoung
>> ___________________________________________________________________________________
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>> 
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> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://bitbucket.org/phg/context-mirror/commits/
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