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







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








tk_focusNext window


tk_focusPrev window


tk_focusFollowsMouse












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 structure 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
    application to an explicit focus model; to do this you will have to write a
    script that deletes the bindings created by tk_focusFollowsMouse.










focus, keyboard traversal, top-level







  

    4.0
    Tk