[racket] Using GUI editor

On Sep 20, 2013, at 1:05 PM, Alan Johnsey wrote:

> It looks like I’ve stumbled into another area where I’m lacking a basic understanding of what’s going on.  I’m trying to use the built-in editor in the gui package, but I need to put some initial content into the editor window. When I put the following in the editor pane and run it, I get the gui editor, but not the text. When I then
> simply put the last line into the interactions window and execute it, I get the text in the gui editor window as desired. Why? What do I need to do to programmatically modify the text in the gui window?
> -Alan
>  
> #lang racket/gui
> (define f (new frame% [label "Notes"]
>                       [width 400]
>                       [height 600]))
> (define c (new editor-canvas% [parent f]))
> (define t (new text%))
> (send c set-editor t)
> (send f show #t)
>  
> (define mb (new menu-bar% [parent f]))
> (define m-edit (new menu% [label "Edit"] [parent mb]))
> (define m-font (new menu% [label "Font"] [parent mb]))
> (append-editor-operation-menu-items m-edit #f)
> (append-editor-font-menu-items m-font)
>  
> ; above pretty much straight out of the Design Doc


Do you want this

 (send t insert "Use this window for making notes" 10 10)

instead of the below? 


>  
> (define dc (send c get-dc))
> (send dc set-scale 1 1)
> (send dc set-text-foreground "blue")
> (send dc draw-text "Use this window for making notes" 0 0)
>  
>  
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