+ It has a unique id (except for the separators which always have id = -1), the
+ style (telling whether it is a normal button, separator or a control), the
+ state (toggled or not, enabled or not) and short and long help strings. The
+ default implementations use the short help string for the tooltip text which
+ is popped up when the mouse pointer enters the tool and the long help string
+ for the applications status bar (currently not implemented).
+