Initial

scribblings/columns-pane.scrbl

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+#lang scribble/manual
+
+@(require
+   scribble/example
+   (for-label racket/base
+              racket/string
+              racket/file))
+
+(define myeval
+   (make-base-eval '(require columns-pane)))
+
+@title[#:tag "columns pane"]{Arrange widgets in columns and make them of equal width per column}
+
+@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
+
+@defmodule[columns-pane]{This module provides a new class @racket[columns-pane%] that can be used to arrange widgets in a table like fashon, making all widgets in a column of the same width}
+
+@defclass/title[columns-pane% vertical-pane% ()]{
+
+A columns pane arranges its subwindows in columns. The number of columns must be given in advance and initializes to 1. 
+
+@defconstructor[([parent (or/c (is-a?/c frame%) (is-a?/c dialog%) 
+                               (is-a?/c panel%) (is-a?/c pane%))]
+                 [columns 1]
+                 [vert-margin spacing-integer? 0]
+                 [horiz-margin spacing-integer? 0]
+                 [border spacing-integer? 0]
+                 [spacing spacing-integer? 0]
+                 [alignment (list/c (or/c 'left 'center 'right)
+                                    (or/c 'top 'center 'bottom))
+                            '(left center)]
+                 [min-width (or/c dimension-integer? #f) #f]
+                 [min-height (or/c dimension-integer? #f) #f]
+                 [stretchable-width any/c #t]
+                 [stretchable-height any/c #t])]{
+
+}}
+
+
+@#reader scribble/comment-reader 
+[racketblock
+   (require racket/gui)
+   (require columns-pane)
+
+   (define win (new frame% [label "A new frame"]))
+   (define grid-group (new group-box-panel%
+                           [label "A new group"] [parent win] [horiz-margin 10] [vert-margin 10]))
+
+   ;; Adding the columns pane with 3 columns
+   (define g (new columns-pane% [parent grid-group] [columns 3]))
+
+   (define btn1 (new button% [parent g] [label "Button 1"]))
+   (define g1 (new gauge%  [parent g] [stretchable-width #t] [label "gauge 1"] [range 100]))
+   (define lbl1 (new message% [parent g] [label "This is lbl 1"]))
+
+   (define btn2 (new button% [parent g] [label "Btn 2"]))
+   (define lbl2 (new message% [parent g] [label "This is lbl 2"]))
+
+   ;; Now, when the window is shown, the columns pane will arrange it's children
+   ;; to have the same width in each column. 
+   (send win show #t)
+]
+
+