The amount of empty pixels left between the managed views.
An integer representing the spacing in pixels.
The amount of empty pixels left between the edges of the parent view and the managed children.
An array of four integers defining margins in the following order: left margin, top margin, right margin, bottom margin; or an array of two integers applied to left/right margin and top/bottom margin respectively; or a single integer applied to all margins.
w = Window.new; w.layout = HLayout( TextView().string_("One"), TextView().string_("Two") ); w.layout.spacing = 20; w.layout.margins = [10, 30, 10, 30]; w.front;