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tk_focusNext(n)                             Tk Built-In Commands                             tk_focusNext(n)



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NAME
       tk_focusNext, tk_focusPrev, tk_focusFollowsMouse - Utility procedures for managing the input focus.

SYNOPSIS
       tk_focusNext window

       tk_focusPrev window

       tk_focusFollowsMouse
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DESCRIPTION
       tk_focusNext  is a utility procedure used for keyboard traversal.  It returns the "next" window after
       window in focus order. The focus order is determined by the stacking order of windows and the  struc-ture structure
       ture  of  the  window  hierarchy.  Among siblings, the focus order is the same as the stacking order,
       with the lowest window being first.  If a window has children, the window is visited first,  followed
       by its children (recursively), followed by its next sibling.  Top-level windows other than window are
       skipped, so that tk_focusNext never returns a window in a different top-level from window.

       After computing the next window, tk_focusNext examines the window's -takefocus option to see  whether
       it  should be skipped.  If so, tk_focusNext continues on to the next window in the focus order, until
       it eventually finds a window that will accept the focus or returns back to window.

       tk_focusPrev is similar to tk_focusNext except that it returns the window just before window  in  the
       focus order.

       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 applica-tion application
       tion to an explicit focus model;  to do this you will have to write a script that deletes  the  bind-ings bindings
       ings created by tk_focusFollowsMouse.


KEYWORDS
       focus, keyboard traversal, top-level



Tk                                                   4.0                                     tk_focusNext(n)