TextView.setGutter

void setGutter(gtk.types.TextWindowType win, gtk.widget.Widget widget = null)

Places widget into the gutter specified by win.

win must be one of [gtk.types.TextWindowType.Left], [gtk.types.TextWindowType.Right], [gtk.types.TextWindowType.Top], or [gtk.types.TextWindowType.Bottom].

Parameters

`win`	a [gtk.types.TextWindowType]
`widget`	a [gtk.widget.Widget]