GUI Table using in Racket / variable parameters using list-box%

Question

I'm currently trying to create a a grid of information in Racket using the Racket Graphical Interface Tooling. The only real table that is available is the list-box% (link to reference)

To fill the table I need to use:

 (send a-list-box set choices ...) → void?
      choices : (listof label-string?)

choices being list being a list of each column. The problem is that I have a variable amount of collumns. My current data is formated like (list (list 1 2 3) (list 4 5 6)). The goal is te execute this command: (send table set (list 1 2 3) (list 4 5 6)

What I already tried

I made a function witch gives me this output: "(list 1 2 3) (list 4 5 6)" The idea was to then execute this string command using:

(send table set (eval (call-with-input-string "(list 1 2 3) (list 4 5 6)" read)

I also tried this:

(eval (call-with-input-string "(send table set (list 1 2 3) (list 4 5 6))" read) But this gives me an error table: undefined; cannot reference an identifier before its definition

If you don't see a problem but now an other way to display a grid of data in racket using the build in GUI, please share. Thanks

Test Code

`#lang racket
(require racket/gui/base)

(define frame (new frame% 
                  [label "myTable"]
                  [width 800]
                  [height 600]
                  ))

(define table (new list-box%
                 [parent frame]
                 [choices (list )]
                 [label "Test"]
                 [style (list 'single 'column-headers 'variable-columns)]
                 [columns (list "C1" "C2" "C3")]))

(define data (list (list "1" "2" "3")
                   (list "4" "5" "6")
                   (list "6" "8" "9")))


(send table set (list-ref data 0) (list-ref data 1) (list-ref data 2));--> Works but needs to be aple to handle variable lengtho of data
;(apply send table set data) ;--> ERROR: send: bad syntax

;(map (lambda (element)
;             (send table set element)) ;--> ERROR: set in list-box%: column count doesn't match argument count  column count: 3  argument count: 1
;     data)

(send frame show #t)`

Answer 1

Looks like send/apply is what you want.

(send/apply table set data)