ToolXXX() function also manipulate
Tk toolbars the same way, but are capable of manipulating other toolbars as
well (not currently, but that could be implemented in the future). One should,
thus, preferably use ToolXXX()!tkToolAdd(toolbar, side = "top")
tkToolAddItem(toolbar, item, action, image = "", options = "")
tkToolDel(toolbar)
tkToolDelItem(toolbar, item)
tkToolItems(toolbar)
tkToolChangeItem(toolbar, item, action = "", options = "")
tkToolStateItem(toolbar, item, active = TRUE)
tkToolInvoke(toolbar, item)tkToolAdd() and tkToolAddItem() return the handle of the newly
created toolbar or toolbutton invisibly.
tkToolDel() and tkToolDelItem() return invisibly TRUE if
the resource is found and deleted, FALSE otherwise.
tkToolItems() returns the list of all items in a given toolbar.
tkToolInvoke() returns invisibly TRUE if the toolbutton was
invoked, FALSE otherwise.
tkToolStateItem() returns the new state of the toolbutton.ToolXXX()
functions that will call them if Tk toolbars or toolbutton are provided.ToolAdd