gtk/gtk.go
func (v *ToolItem) GetIconSize() IconSize {
	c := C.gtk_tool_item_get_icon_size(v.native())
	return IconSize(c)
}
func (v *ToolItem) GetIconSize() IconSize {
	c := C.gtk_tool_item_get_icon_size(v.native())
	return IconSize(c)
}
// TODO: gtk_tool_item_get_ellipsize_mode
// GetIconSize is a wrapper around gtk_tool_item_get_icon_size().