Tooltip.setIconFromIconName

void setIconFromIconName(string iconName, gtk.types.IconSize size)

Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by icon_name with the size indicated by size. If icon_name is null, the image will be hidden.

Parameters

`iconName`	an icon name, or null
`size`	a stock icon size (#GtkIconSize)