'\"'\" Copyright (c) 1994 The Regents of the University of California.'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.'\"'\" See the file "license.terms" for information on usage and redistribution'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.'\" '\" SCCS: @(#) focusNext.n 1.10 96/03/26 18:22:23'\" .so man.macros.TH tk_focusNext n 4.0 Tk "Tk Built-In Commands".BS'\" Note:  do not modify the .SH NAME line immediately below!.SH NAMEtk_focusNext, tk_focusPrev, tk_focusFollowsMouse \- Utility procedures for managing the input focus..SH SYNOPSIS\fBtk_focusNext \fIwindow\fR.sp\fBtk_focusPrev \fIwindow\fR.sp\fBtk_focusFollowsMouse\fR.BE.SH DESCRIPTION.PP\fBtk_focusNext\fR is a utility procedure used for keyboard traversal.It returns the ``next'' window after \fIwindow\fR in focus order.The focus order is determined bythe stacking order of windows and the structure of the window hierarchy.Among siblings, the focus order is the same as the stacking order, with thelowest window being first.If a window has children, the window is visited first, followed byits children (recursively), followed by its next sibling.Top-level windows other than \fIwindow\fR are skipped, so that\fBtk_focusNext\fR never returns a window in a different top-levelfrom \fIwindow\fR..PPAfter computing the next window, \fBtk_focusNext\fR examines thewindow's \fB\-takefocus\fR option to see whether it should be skipped.If so, \fBtk_focusNext\fR continues on to the next window in the focusorder, until it eventually finds a window that will accept the focusor returns back to \fIwindow\fR..PP\fBtk_focusPrev\fR is similar to \fBtk_focusNext\fR except that itreturns the window just before \fIwindow\fR in the focus order..PP\fBtk_focusFollowsMouse\fR changes the focus model for the applicationto an implicit one where the window under the mouse gets the focus.After this procedure is called, whenever the mouse enters a windowTk will automatically give it the input focus.The \fBfocus\fR command may be used to move the focus to a windowother than the one under the mouse, but as soon as the mouse movesinto a new window the focus will jump to that window.Note: at present there is no built-in support for returning theapplication to an explicit focus model;  to do this you'll haveto write a script that deletes the bindings created by\fBtk_focusFollowsMouse\fR..SH KEYWORDSfocus, keyboard traversal, top-level