column width

main.rkt

@@ -10,6 +10,7 @@
 
     ;; Internal data
     (define hpanes #f)
+    (define column-min-widths (make-vector columns 0))
     (define creating-row #f)
     (define current-col 0)
     (define current-row 0)
@@ -58,8 +59,11 @@
           (set-min-width* c (+ r 1) w))))
     
     (define/private (arrange-col* c)
-      (let ((w (max-width* c 0 -1)))
-        (set-min-width* c 0 w)))
+      (let* ((w (max-width* c 0 -1))
+             (col-min-width (vector-ref column-min-widths c))
+             (w* (if (> col-min-width w) col-min-width w))
+             )
+        (set-min-width* c 0 w*)))
         
     (define/private (arrange*)
       (letrec ((cols (length (send (vector-ref hpanes 0) get-children)))
@@ -74,6 +78,13 @@
     (init-field [vert-margin 5] [horiz-margin 5] [spacing 5] [columns 1])
 
     ;; Public methods
+    (define/public (column-min-width c . w)
+      (unless (null? w)
+        (vector-set! column-min-widths c w))
+      (vector-ref column-min-widths c))
+    
+
+    ;; Overridden methods
     (define/override (after-new-child child)
       (super after-new-child child)
       (when (eq? creating-row #f)

scribblings/columns-pane.scrbl

@@ -31,6 +31,13 @@ See also @racket[pane%].
                  [stretchable-width any/c #t]
                  [stretchable-height any/c #t])]{
 
+
+@defmethod*[([(min-width (c column-index) [w dimenstion-integer?]) dimension-integer?])]{
+ Gets or sets the minimum width (in pixels) of the given column c.
+
+ Returns the currently set minimum width for the given column. 
+}
+                                                
 }}
 
 @section{Example code}