list - Racket - How to get value from text-field in scheme -

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i have questions mit scheme language.

i use drracket editor , racket langage (#lang racket/gui)

1) how value text-field ?

answer: (send mytext-field get-value) ---> ok this

2) how lock text-field

3) how convert text getting 1) "list"

for example if user enter : ------------------------                             | '(a b b c d u)   |                             ------------------------ how value , convert liste have following result: '(a b b c d u)

4) how convert text getting 1) "atom"

for example if user enter : ------------------------                             | 'a                   |                             ------------------------ how value , convert "atom" have following result: 'a

5) how include drracket file contain process functions (business layer) gui(presentation layer) procedure file ?

for 3) , 4).

> (read (open-input-string "(a b c d e f)")) '(a b c d e f) > (read (open-input-string "'(a b c d e f)")) ''(a b c d e f) > (read (open-input-string "a")) 'a > (read (open-input-string "'a")) ''a

note: instead of putting multiple questions 1 post, split them. question-and-answer format on site handles single, focused questions better.


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