# File gtk/sample/misc/drawing.rb, line 30 def clear(b = @buffer) return if b.nil? g = b.size @bgc = self.style.bg_gc(self.state) if @bgc.nil? if (g[0] > 0 && g[1] > 0) b.draw_rectangle(@bgc, true, 0,0, g[0], g[1]) end end