Exercise 35.4.2

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zlee

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Oct 13, 2009, 11:29:39 PM10/13/09
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Hi all,

Maybe someone can help me.

First, how to get phone-book.ss teachpack?
Second, how to write string to text field? The library functions given
in 22.3 don't have one to write to text field.

There has to be someone who worked this far.

Thanks!
Zhen

Grant Rettke

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Oct 16, 2009, 11:41:43 PM10/16/09
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Hi Zhen,

You should post your question here:

http://www.plt-scheme.org/maillist/

There aren't many folks who can answer right now :).

Dave

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Nov 13, 2009, 12:55:54 AM11/13/09
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Hi Zhen --

String to text field:

(define a-msg (make-message "Hello"))
(draw-message a-msg "Here is a text message")

draw-message writes a string message (2nd argument) to the gui-item it
accepts as the first argument

If the message were a symbol, you can covert it to a string using the
symbol->string function
(draw-message a-msg (symbol->string 'converted-symbol))

Likewise with a number

(draw-message a-msg (number->string 42))

FYI -- ignore exercise 35.4.2 per MF. The 'connect function is not
available.

Dave Yrueta
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