ButtonClose SUB

 Action
 Erases the specified button from the current window and deletes it from the
 global arrays.


 Syntax
 ButtonClose handle%

 Remarks
 The ButtonClose procedure is used to close individual buttons that have been
 opened with ButtonOpen. The argument handle% is an integer that indicates
 the number of the button being closed. This can be any number between 0 and
 the value declared in the constant MAXBUTTON, inclusive. If handle% is 0,
 all buttons in the current window are closed.

 If the WindowClose procedure is used to close a window that contains
 buttons, you need not use this procedure, because all buttons associated
 with a closing window are closed automatically.

 See Also.  ButtonOpen, WindowClose