group-box-panel% : class?

superclass: vertical-panel%

A group-box panel arranges its subwindows in a single column, but also draws an optional label at the top of the panel and a border around the panel content.

Unlike most panel classes, a group-box panel’s horizontal and vertical margins default to 2.

(new group-box-panel%       [label label]       [parent parent]      [ [style style]       [font font]       [enabled enabled]       [vert-margin vert-margin]       [horiz-margin horiz-margin]       [border border]       [spacing spacing]       [alignment alignment]       [min-width min-width]       [min-height min-height]       [stretchable-width stretchable-width]       [stretchable-height stretchable-height]])

→ (is-a?/c group-box-panel%)

label : label-string?

parent   :   (or/c (is-a?/c frame%) (is-a?/c dialog%)       (is-a?/c panel%) (is-a?/c pane%))

style : (listof (one-of/c 'deleted)) = null

font : (is-a?/c font%) = small-control-font

enabled : any/c = #t

vert-margin : (integer-in 0 1000) = 2

horiz-margin : (integer-in 0 1000) = 2

border : (integer-in 0 1000) = 0

spacing : (integer-in 0 1000) = 0

alignment   :   (list/c (one-of/c 'left 'center 'right)         (one-of/c 'top 'center 'bottom))       =   '(center top)

min-width : (integer-in 0 10000) = graphical-minimum-width

min-height : (integer-in 0 10000) = graphical-minimum-height

stretchable-width : any/c = #t

stretchable-height : any/c = #t

Creates a group pane whose title is label.

If style includes 'deleted, then the group panel is created as hidden, and it does not affect its parent’s geometry; the group panel can be made active later by calling parent’s add-child method.

The font argument determines the font for the control. For information about the enabled argument, see window<%>. For information about the horiz-margin and vert-margin arguments, see subarea<%>. For information about the min-width, min-height, stretchable-width, and stretchable-height arguments, see area<%>.