code: func (win *Window) Tooltip(text string) {
  	if text == "" {
  		return
  	}
  
  	/* fetch configuration data */
  	padding := win.ctx.Style.TooltipWindow.Padding
  	item_spacing := win.ctx.Style.TooltipWindow.Spacing
  
  	/* calculate size of the text and tooltip */
  	text_width := FontWidth(win.ctx.Style.Font, text) + win.ctx.scale(4*padding.X) + win.ctx.scale(2*item_spacing.X)
  	text_height := FontHeight(win.ctx.Style.Font)
  
  	win.TooltipOpen(text_width, false, func(tw *Window) {
  		tw.RowScaled(text_height).Dynamic(1)
  		tw.Label(text, "LC")
  	})
  }
docs: // Shows a tooltip window containing the specified text.