Utility procedures for managing the input focus.

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http://purl.org/tcl/home/man/tcl8.4/TkCmd/focusNext.htm

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**Synopsis**

    :   '''tk_focusFollowsMouse'''

**Description**

'''[tk_focusFollowsMouse]''' changes the focus model for the application to an implicit one where the window under the mouse gets the [focus]. After this procedure is called, whenever the mouse enters a window [Tk] will automatically give it the input focus. The focus command may be used to move the focus to a window other than the one under the mouse, but as soon as the mouse moves into a new window the focus will jump to that window. Note: at present there is no built-in support for returning the application to an explicit focus model; to do this you'll have to write a script that deletes the bindings created by '''tk_focusFollowsMouse'''. 

<<discussion>>
[DKF]: Please don't use this! The focus-follows-mouse interaction style is really quite hard to use in practice, and leads to weird bugs when the user bumps their mouse by accident. The default click/tab-to-focus style is far better from a usability perspective.
<<discussion>>
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**See also**
   * [focus]
   * [tk_focusNext]
   * [tk_focusPrev]
   * [tk_menuSetFocus]

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