share/tk8.4/button.tcl - toolchains/skids - Git at Google

 # button.tcl --
 #
 # This file defines the default bindings for Tk label, button,
 # checkbutton, and radiobutton widgets and provides procedures
 # that help in implementing those bindings.
 #
 # RCS: @(#) $Id: button.tcl,v 1.17 2002/09/04 02:05:52 hobbs Exp $
 #
 # Copyright (c) 1992-1994 The Regents of the University of California.
 # Copyright (c) 1994-1996 Sun Microsystems, Inc.
 # Copyright (c) 2002 ActiveState Corporation.
 #
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #

 #-------------------------------------------------------------------------
 # The code below creates the default class bindings for buttons.
 #-------------------------------------------------------------------------

 if {[string equal [tk windowingsystem] "classic"]
 	|| [string equal [tk windowingsystem] "aqua"]} {
     bind Radiobutton <Enter> {
 	tk::ButtonEnter %W
     }
     bind Radiobutton <1> {
 	tk::ButtonDown %W
     }
     bind Radiobutton <ButtonRelease-1> {
 	tk::ButtonUp %W
     }
     bind Checkbutton <Enter> {
 	tk::ButtonEnter %W
     }
     bind Checkbutton <1> {
 	tk::ButtonDown %W
     }
     bind Checkbutton <ButtonRelease-1> {
 	tk::ButtonUp %W
     }
 }
 if {[string equal "windows" $tcl_platform(platform)]} {
     bind Checkbutton <equal> {
 	tk::CheckRadioInvoke %W select
     }
     bind Checkbutton <plus> {
 	tk::CheckRadioInvoke %W select
     }
     bind Checkbutton <minus> {
 	tk::CheckRadioInvoke %W deselect
     }
     bind Checkbutton <1> {
 	tk::CheckRadioDown %W
     }
     bind Checkbutton <ButtonRelease-1> {
 	tk::ButtonUp %W
     }
     bind Checkbutton <Enter> {
 	tk::CheckRadioEnter %W
     }

     bind Radiobutton <1> {
 	tk::CheckRadioDown %W
     }
     bind Radiobutton <ButtonRelease-1> {
 	tk::ButtonUp %W
     }
     bind Radiobutton <Enter> {
 	tk::CheckRadioEnter %W
     }
 }
 if {[string equal "x11" [tk windowingsystem]]} {
     bind Checkbutton <Return> {
 	if {!$tk_strictMotif} {
 	    tk::CheckRadioInvoke %W
 	}
     }
     bind Radiobutton <Return> {
 	if {!$tk_strictMotif} {
 	    tk::CheckRadioInvoke %W
 	}
     }
     bind Checkbutton <1> {
 	tk::CheckRadioInvoke %W
     }
     bind Radiobutton <1> {
 	tk::CheckRadioInvoke %W
     }
     bind Checkbutton <Enter> {
 	tk::ButtonEnter %W
     }
     bind Radiobutton <Enter> {
 	tk::ButtonEnter %W
     }
 }

 bind Button <space> {
     tk::ButtonInvoke %W
 }
 bind Checkbutton <space> {
     tk::CheckRadioInvoke %W
 }
 bind Radiobutton <space> {
     tk::CheckRadioInvoke %W
 }

 bind Button <FocusIn> {}
 bind Button <Enter> {
     tk::ButtonEnter %W
 }
 bind Button <Leave> {
     tk::ButtonLeave %W
 }
 bind Button <1> {
     tk::ButtonDown %W
 }
 bind Button <ButtonRelease-1> {
     tk::ButtonUp %W
 }

 bind Checkbutton <FocusIn> {}
 bind Checkbutton <Leave> {
     tk::ButtonLeave %W
 }

 bind Radiobutton <FocusIn> {}
 bind Radiobutton <Leave> {
     tk::ButtonLeave %W
 }

 if {[string equal "windows" $tcl_platform(platform)]} {

 #########################
 # Windows implementation
 #########################

 # ::tk::ButtonEnter --
 # The procedure below is invoked when the mouse pointer enters a
 # button widget.  It records the button we're in and changes the
 # state of the button to active unless the button is disabled.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonEnter w {
     variable ::tk::Priv
     if {[$w cget -state] ne "disabled"} {

 	# If the mouse button is down, set the relief to sunken on entry.
 	# Overwise, if there's an -overrelief value, set the relief to that.

 	set Priv($w,relief) [$w cget -relief]
 	if {$Priv(buttonWindow) eq $w} {
 	    $w configure -relief sunken -state active
 	    set Priv($w,prelief) sunken
 	} elseif {[set over [$w cget -overrelief]] ne ""} {
 	    $w configure -relief $over
 	    set Priv($w,prelief) $over
 	}
     }
     set Priv(window) $w
 }

 # ::tk::ButtonLeave --
 # The procedure below is invoked when the mouse pointer leaves a
 # button widget.  It changes the state of the button back to inactive.
 # Restore any modified relief too.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonLeave w {
     variable ::tk::Priv
     if {[$w cget -state] ne "disabled"} {
 	$w configure -state normal
     }

     # Restore the original button relief if it was changed by Tk.
     # That is signaled by the existence of Priv($w,prelief).

     if {[info exists Priv($w,relief)]} {
 	if {[info exists Priv($w,prelief)] && \
 		$Priv($w,prelief) eq [$w cget -relief]} {
 	    $w configure -relief $Priv($w,relief)
 	}
 	unset -nocomplain Priv($w,relief) Priv($w,prelief)
     }

     set Priv(window) ""
 }

 # ::tk::ButtonDown --
 # The procedure below is invoked when the mouse button is pressed in
 # a button widget.  It records the fact that the mouse is in the button,
 # saves the button's relief so it can be restored later, and changes
 # the relief to sunken.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonDown w {
     variable ::tk::Priv

     # Only save the button's relief if it does not yet exist.  If there
     # is an overrelief setting, Priv($w,relief) will already have been set,
     # and the current value of the -relief option will be incorrect.

     if {![info exists Priv($w,relief)]} {
 	set Priv($w,relief) [$w cget -relief]
     }

     if {[$w cget -state] ne "disabled"} {
 	set Priv(buttonWindow) $w
 	$w configure -relief sunken -state active
 	set Priv($w,prelief) sunken

 	# If this button has a repeatdelay set up, get it going with an after
 	after cancel $Priv(afterId)
 	set delay [$w cget -repeatdelay]
 	set Priv(repeated) 0
 	if {$delay > 0} {
 	    set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
 	}
     }
 }

 # ::tk::ButtonUp --
 # The procedure below is invoked when the mouse button is released
 # in a button widget.  It restores the button's relief and invokes
 # the command as long as the mouse hasn't left the button.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonUp w {
     variable ::tk::Priv
     if {$Priv(buttonWindow) eq $w} {
 	set Priv(buttonWindow) ""

 	# Restore the button's relief if it was cached.

 	if {[info exists Priv($w,relief)]} {
 	    if {[info exists Priv($w,prelief)] && \
 		    $Priv($w,prelief) eq [$w cget -relief]} {
 		$w configure -relief $Priv($w,relief)
 	    }
 	    unset -nocomplain Priv($w,relief) Priv($w,prelief)
 	}

 	# Clean up the after event from the auto-repeater
 	after cancel $Priv(afterId)

 	if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
 	    $w configure -state normal

 	    # Only invoke the command if it wasn't already invoked by the
 	    # auto-repeater functionality
 	    if { $Priv(repeated) == 0 } {
 		uplevel #0 [list $w invoke]
 	    }
 	}
     }
 }

 # ::tk::CheckRadioEnter --
 # The procedure below is invoked when the mouse pointer enters a
 # checkbutton or radiobutton widget.  It records the button we're in
 # and changes the state of the button to active unless the button is
 # disabled.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::CheckRadioEnter w {
     variable ::tk::Priv
     if {[$w cget -state] ne "disabled"} {
 	if {$Priv(buttonWindow) eq $w} {
 	    $w configure -state active
 	}
 	if {[set over [$w cget -overrelief]] ne ""} {
 	    set Priv($w,relief)  [$w cget -relief]
 	    set Priv($w,prelief) $over
 	    $w configure -relief $over
 	}
     }
     set Priv(window) $w
 }

 # ::tk::CheckRadioDown --
 # The procedure below is invoked when the mouse button is pressed in
 # a button widget.  It records the fact that the mouse is in the button,
 # saves the button's relief so it can be restored later, and changes
 # the relief to sunken.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::CheckRadioDown w {
     variable ::tk::Priv
     if {![info exists Priv($w,relief)]} {
 	set Priv($w,relief) [$w cget -relief]
     }
     if {[$w cget -state] ne "disabled"} {
 	set Priv(buttonWindow) $w
 	set Priv(repeated) 0
 	$w configure -state active
     }
 }

 }

 if {[string equal "x11" [tk windowingsystem]]} {

 #####################
 # Unix implementation
 #####################

 # ::tk::ButtonEnter --
 # The procedure below is invoked when the mouse pointer enters a
 # button widget.  It records the button we're in and changes the
 # state of the button to active unless the button is disabled.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonEnter {w} {
     variable ::tk::Priv
     if {[$w cget -state] ne "disabled"} {
 	# On unix the state is active just with mouse-over
 	$w configure -state active

 	# If the mouse button is down, set the relief to sunken on entry.
 	# Overwise, if there's an -overrelief value, set the relief to that.

 	set Priv($w,relief) [$w cget -relief]
 	if {$Priv(buttonWindow) eq $w} {
 	    $w configure -relief sunken
 	    set Priv($w,prelief) sunken
 	} elseif {[set over [$w cget -overrelief]] ne ""} {
 	    $w configure -relief $over
 	    set Priv($w,prelief) $over
 	}
     }
     set Priv(window) $w
 }

 # ::tk::ButtonLeave --
 # The procedure below is invoked when the mouse pointer leaves a
 # button widget.  It changes the state of the button back to inactive.
 # Restore any modified relief too.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonLeave w {
     variable ::tk::Priv
     if {[$w cget -state] ne "disabled"} {
 	$w configure -state normal
     }

     # Restore the original button relief if it was changed by Tk.
     # That is signaled by the existence of Priv($w,prelief).

     if {[info exists Priv($w,relief)]} {
 	if {[info exists Priv($w,prelief)] && \
 		$Priv($w,prelief) eq [$w cget -relief]} {
 	    $w configure -relief $Priv($w,relief)
 	}
 	unset -nocomplain Priv($w,relief) Priv($w,prelief)
     }

     set Priv(window) ""
 }

 # ::tk::ButtonDown --
 # The procedure below is invoked when the mouse button is pressed in
 # a button widget.  It records the fact that the mouse is in the button,
 # saves the button's relief so it can be restored later, and changes
 # the relief to sunken.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonDown w {
     variable ::tk::Priv

     # Only save the button's relief if it does not yet exist.  If there
     # is an overrelief setting, Priv($w,relief) will already have been set,
     # and the current value of the -relief option will be incorrect.

     if {![info exists Priv($w,relief)]} {
 	set Priv($w,relief) [$w cget -relief]
     }

     if {[$w cget -state] ne "disabled"} {
 	set Priv(buttonWindow) $w
 	$w configure -relief sunken
 	set Priv($w,prelief) sunken

 	# If this button has a repeatdelay set up, get it going with an after
 	after cancel $Priv(afterId)
 	set delay [$w cget -repeatdelay]
 	set Priv(repeated) 0
 	if {$delay > 0} {
 	    set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
 	}
     }
 }

 # ::tk::ButtonUp --
 # The procedure below is invoked when the mouse button is released
 # in a button widget.  It restores the button's relief and invokes
 # the command as long as the mouse hasn't left the button.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonUp w {
     variable ::tk::Priv
     if {[string equal $w $Priv(buttonWindow)]} {
 	set Priv(buttonWindow) ""

 	# Restore the button's relief if it was cached.

 	if {[info exists Priv($w,relief)]} {
 	    if {[info exists Priv($w,prelief)] && \
 		    $Priv($w,prelief) eq [$w cget -relief]} {
 		$w configure -relief $Priv($w,relief)
 	    }
 	    unset -nocomplain Priv($w,relief) Priv($w,prelief)
 	}

 	# Clean up the after event from the auto-repeater
 	after cancel $Priv(afterId)

 	if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
 	    # Only invoke the command if it wasn't already invoked by the
 	    # auto-repeater functionality
 	    if { $Priv(repeated) == 0 } {
 		uplevel #0 [list $w invoke]
 	    }
 	}
     }
 }

 }

 if {[string equal [tk windowingsystem] "classic"]
 	|| [string equal [tk windowingsystem] "aqua"]} {

 ####################
 # Mac implementation
 ####################

 # ::tk::ButtonEnter --
 # The procedure below is invoked when the mouse pointer enters a
 # button widget.  It records the button we're in and changes the
 # state of the button to active unless the button is disabled.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonEnter {w} {
     variable ::tk::Priv
     if {[$w cget -state] ne "disabled"} {

 	# If there's an -overrelief value, set the relief to that.

 	if {$Priv(buttonWindow) eq $w} {
 	    $w configure -state active
 	} elseif {[set over [$w cget -overrelief]] ne ""} {
 	    set Priv($w,relief)  [$w cget -relief]
 	    set Priv($w,prelief) $over
 	    $w configure -relief $over
 	}
     }
     set Priv(window) $w
 }

 # ::tk::ButtonLeave --
 # The procedure below is invoked when the mouse pointer leaves a
 # button widget.  It changes the state of the button back to
 # inactive.  If we're leaving the button window with a mouse button
 # pressed (Priv(buttonWindow) == $w), restore the relief of the
 # button too.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonLeave w {
     variable ::tk::Priv
     if {$w eq $Priv(buttonWindow)} {
 	$w configure -state normal
     }

     # Restore the original button relief if it was changed by Tk.
     # That is signaled by the existence of Priv($w,prelief).

     if {[info exists Priv($w,relief)]} {
 	if {[info exists Priv($w,prelief)] && \
 		$Priv($w,prelief) eq [$w cget -relief]} {
 	    $w configure -relief $Priv($w,relief)
 	}
 	unset -nocomplain Priv($w,relief) Priv($w,prelief)
     }

     set Priv(window) ""
 }

 # ::tk::ButtonDown --
 # The procedure below is invoked when the mouse button is pressed in
 # a button widget.  It records the fact that the mouse is in the button,
 # saves the button's relief so it can be restored later, and changes
 # the relief to sunken.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonDown w {
     variable ::tk::Priv

     if {[$w cget -state] ne "disabled"} {
 	set Priv(buttonWindow) $w
 	$w configure -state active

 	# If this button has a repeatdelay set up, get it going with an after
 	after cancel $Priv(afterId)
 	set Priv(repeated) 0
 	if { ![catch {$w cget -repeatdelay} delay] } {
 	    if {$delay > 0} {
 		set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
 	    }
 	}
     }
 }

 # ::tk::ButtonUp --
 # The procedure below is invoked when the mouse button is released
 # in a button widget.  It restores the button's relief and invokes
 # the command as long as the mouse hasn't left the button.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonUp w {
     variable ::tk::Priv
     if {$Priv(buttonWindow) eq $w} {
 	set Priv(buttonWindow) ""
 	$w configure -state normal

 	# Restore the button's relief if it was cached.

 	if {[info exists Priv($w,relief)]} {
 	    if {[info exists Priv($w,prelief)] && \
 		    $Priv($w,prelief) eq [$w cget -relief]} {
 		$w configure -relief $Priv($w,relief)
 	    }
 	    unset -nocomplain Priv($w,relief) Priv($w,prelief)
 	}

 	# Clean up the after event from the auto-repeater
 	after cancel $Priv(afterId)

 	if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
 	    # Only invoke the command if it wasn't already invoked by the
 	    # auto-repeater functionality
 	    if { $Priv(repeated) == 0 } {
 		uplevel #0 [list $w invoke]
 	    }
 	}
     }
 }

 }

 ##################
 # Shared routines
 ##################

 # ::tk::ButtonInvoke --
 # The procedure below is called when a button is invoked through
 # the keyboard.  It simulate a press of the button via the mouse.
 #
 # Arguments:
 # w -		The name of the widget.

 proc ::tk::ButtonInvoke w {
     if {[$w cget -state] ne "disabled"} {
 	set oldRelief [$w cget -relief]
 	set oldState [$w cget -state]
 	$w configure -state active -relief sunken
 	update idletasks
 	after 100
 	$w configure -state $oldState -relief $oldRelief
 	uplevel #0 [list $w invoke]
     }
 }

 # ::tk::ButtonAutoInvoke --
 #
 #	Invoke an auto-repeating button, and set it up to continue to repeat.
 #
 # Arguments:
 #	w	button to invoke.
 #
 # Results:
 #	None.
 #
 # Side effects:
 #	May create an after event to call ::tk::ButtonAutoInvoke.

 proc ::tk::ButtonAutoInvoke {w} {
     variable ::tk::Priv
     after cancel $Priv(afterId)
     set delay [$w cget -repeatinterval]
     if {$Priv(window) eq $w} {
 	incr Priv(repeated)
 	uplevel #0 [list $w invoke]
     }
     if {$delay > 0} {
 	set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
     }
 }

 # ::tk::CheckRadioInvoke --
 # The procedure below is invoked when the mouse button is pressed in
 # a checkbutton or radiobutton widget, or when the widget is invoked
 # through the keyboard.  It invokes the widget if it
 # isn't disabled.
 #
 # Arguments:
 # w -		The name of the widget.
 # cmd -		The subcommand to invoke (one of invoke, select, or deselect).

 proc ::tk::CheckRadioInvoke {w {cmd invoke}} {
     if {[$w cget -state] ne "disabled"} {
 	uplevel #0 [list $w $cmd]
     }
 }
	# button.tcl --
	#
	# This file defines the default bindings for Tk label, button,
	# checkbutton, and radiobutton widgets and provides procedures
	# that help in implementing those bindings.
	#
	# RCS: @(#) $Id: button.tcl,v 1.17 2002/09/04 02:05:52 hobbs Exp $
	#
	# Copyright (c) 1992-1994 The Regents of the University of California.
	# Copyright (c) 1994-1996 Sun Microsystems, Inc.
	# Copyright (c) 2002 ActiveState Corporation.
	#
	# See the file "license.terms" for information on usage and redistribution
	# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	#

	#-------------------------------------------------------------------------
	# The code below creates the default class bindings for buttons.
	#-------------------------------------------------------------------------

	if {[string equal [tk windowingsystem] "classic"]
	\|\| [string equal [tk windowingsystem] "aqua"]} {
	bind Radiobutton <Enter> {
	tk::ButtonEnter %W
	}
	bind Radiobutton <1> {
	tk::ButtonDown %W
	}
	bind Radiobutton <ButtonRelease-1> {
	tk::ButtonUp %W
	}
	bind Checkbutton <Enter> {
	tk::ButtonEnter %W
	}
	bind Checkbutton <1> {
	tk::ButtonDown %W
	}
	bind Checkbutton <ButtonRelease-1> {
	tk::ButtonUp %W
	}
	}
	if {[string equal "windows" $tcl_platform(platform)]} {
	bind Checkbutton <equal> {
	tk::CheckRadioInvoke %W select
	}
	bind Checkbutton <plus> {
	tk::CheckRadioInvoke %W select
	}
	bind Checkbutton <minus> {
	tk::CheckRadioInvoke %W deselect
	}
	bind Checkbutton <1> {
	tk::CheckRadioDown %W
	}
	bind Checkbutton <ButtonRelease-1> {
	tk::ButtonUp %W
	}
	bind Checkbutton <Enter> {
	tk::CheckRadioEnter %W
	}

	bind Radiobutton <1> {
	tk::CheckRadioDown %W
	}
	bind Radiobutton <ButtonRelease-1> {
	tk::ButtonUp %W
	}
	bind Radiobutton <Enter> {
	tk::CheckRadioEnter %W
	}
	}
	if {[string equal "x11" [tk windowingsystem]]} {
	bind Checkbutton <Return> {
	if {!$tk_strictMotif} {
	tk::CheckRadioInvoke %W
	}
	}
	bind Radiobutton <Return> {
	if {!$tk_strictMotif} {
	tk::CheckRadioInvoke %W
	}
	}
	bind Checkbutton <1> {
	tk::CheckRadioInvoke %W
	}
	bind Radiobutton <1> {
	tk::CheckRadioInvoke %W
	}
	bind Checkbutton <Enter> {
	tk::ButtonEnter %W
	}
	bind Radiobutton <Enter> {
	tk::ButtonEnter %W
	}
	}

	bind Button <space> {
	tk::ButtonInvoke %W
	}
	bind Checkbutton <space> {
	tk::CheckRadioInvoke %W
	}
	bind Radiobutton <space> {
	tk::CheckRadioInvoke %W
	}

	bind Button <FocusIn> {}
	bind Button <Enter> {
	tk::ButtonEnter %W
	}
	bind Button <Leave> {
	tk::ButtonLeave %W
	}
	bind Button <1> {
	tk::ButtonDown %W
	}
	bind Button <ButtonRelease-1> {
	tk::ButtonUp %W
	}

	bind Checkbutton <FocusIn> {}
	bind Checkbutton <Leave> {
	tk::ButtonLeave %W
	}

	bind Radiobutton <FocusIn> {}
	bind Radiobutton <Leave> {
	tk::ButtonLeave %W
	}

	if {[string equal "windows" $tcl_platform(platform)]} {

	#########################
	# Windows implementation
	#########################

	# ::tk::ButtonEnter --
	# The procedure below is invoked when the mouse pointer enters a
	# button widget. It records the button we're in and changes the
	# state of the button to active unless the button is disabled.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonEnter w {
	variable ::tk::Priv
	if {[$w cget -state] ne "disabled"} {

	# If the mouse button is down, set the relief to sunken on entry.
	# Overwise, if there's an -overrelief value, set the relief to that.

	set Priv($w,relief) [$w cget -relief]
	if {$Priv(buttonWindow) eq $w} {
	$w configure -relief sunken -state active
	set Priv($w,prelief) sunken
	} elseif {[set over [$w cget -overrelief]] ne ""} {
	$w configure -relief $over
	set Priv($w,prelief) $over
	}
	}
	set Priv(window) $w
	}

	# ::tk::ButtonLeave --
	# The procedure below is invoked when the mouse pointer leaves a
	# button widget. It changes the state of the button back to inactive.
	# Restore any modified relief too.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonLeave w {
	variable ::tk::Priv
	if {[$w cget -state] ne "disabled"} {
	$w configure -state normal
	}

	# Restore the original button relief if it was changed by Tk.
	# That is signaled by the existence of Priv($w,prelief).

	if {[info exists Priv($w,relief)]} {
	if {[info exists Priv($w,prelief)] && \
	$Priv($w,prelief) eq [$w cget -relief]} {
	$w configure -relief $Priv($w,relief)
	}
	unset -nocomplain Priv($w,relief) Priv($w,prelief)
	}

	set Priv(window) ""
	}

	# ::tk::ButtonDown --
	# The procedure below is invoked when the mouse button is pressed in
	# a button widget. It records the fact that the mouse is in the button,
	# saves the button's relief so it can be restored later, and changes
	# the relief to sunken.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonDown w {
	variable ::tk::Priv

	# Only save the button's relief if it does not yet exist. If there
	# is an overrelief setting, Priv($w,relief) will already have been set,
	# and the current value of the -relief option will be incorrect.

	if {![info exists Priv($w,relief)]} {
	set Priv($w,relief) [$w cget -relief]
	}

	if {[$w cget -state] ne "disabled"} {
	set Priv(buttonWindow) $w
	$w configure -relief sunken -state active
	set Priv($w,prelief) sunken

	# If this button has a repeatdelay set up, get it going with an after
	after cancel $Priv(afterId)
	set delay [$w cget -repeatdelay]
	set Priv(repeated) 0
	if {$delay > 0} {
	set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
	}
	}
	}

	# ::tk::ButtonUp --
	# The procedure below is invoked when the mouse button is released
	# in a button widget. It restores the button's relief and invokes
	# the command as long as the mouse hasn't left the button.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonUp w {
	variable ::tk::Priv
	if {$Priv(buttonWindow) eq $w} {
	set Priv(buttonWindow) ""

	# Restore the button's relief if it was cached.

	if {[info exists Priv($w,relief)]} {
	if {[info exists Priv($w,prelief)] && \
	$Priv($w,prelief) eq [$w cget -relief]} {
	$w configure -relief $Priv($w,relief)
	}
	unset -nocomplain Priv($w,relief) Priv($w,prelief)
	}

	# Clean up the after event from the auto-repeater
	after cancel $Priv(afterId)

	if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
	$w configure -state normal

	# Only invoke the command if it wasn't already invoked by the
	# auto-repeater functionality
	if { $Priv(repeated) == 0 } {
	uplevel #0 [list $w invoke]
	}
	}
	}
	}

	# ::tk::CheckRadioEnter --
	# The procedure below is invoked when the mouse pointer enters a
	# checkbutton or radiobutton widget. It records the button we're in
	# and changes the state of the button to active unless the button is
	# disabled.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::CheckRadioEnter w {
	variable ::tk::Priv
	if {[$w cget -state] ne "disabled"} {
	if {$Priv(buttonWindow) eq $w} {
	$w configure -state active
	}
	if {[set over [$w cget -overrelief]] ne ""} {
	set Priv($w,relief) [$w cget -relief]
	set Priv($w,prelief) $over
	$w configure -relief $over
	}
	}
	set Priv(window) $w
	}

	# ::tk::CheckRadioDown --
	# The procedure below is invoked when the mouse button is pressed in
	# a button widget. It records the fact that the mouse is in the button,
	# saves the button's relief so it can be restored later, and changes
	# the relief to sunken.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::CheckRadioDown w {
	variable ::tk::Priv
	if {![info exists Priv($w,relief)]} {
	set Priv($w,relief) [$w cget -relief]
	}
	if {[$w cget -state] ne "disabled"} {
	set Priv(buttonWindow) $w
	set Priv(repeated) 0
	$w configure -state active
	}
	}

	}

	if {[string equal "x11" [tk windowingsystem]]} {

	#####################
	# Unix implementation
	#####################

	# ::tk::ButtonEnter --
	# The procedure below is invoked when the mouse pointer enters a
	# button widget. It records the button we're in and changes the
	# state of the button to active unless the button is disabled.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonEnter {w} {
	variable ::tk::Priv
	if {[$w cget -state] ne "disabled"} {
	# On unix the state is active just with mouse-over
	$w configure -state active

	# If the mouse button is down, set the relief to sunken on entry.
	# Overwise, if there's an -overrelief value, set the relief to that.

	set Priv($w,relief) [$w cget -relief]
	if {$Priv(buttonWindow) eq $w} {
	$w configure -relief sunken
	set Priv($w,prelief) sunken
	} elseif {[set over [$w cget -overrelief]] ne ""} {
	$w configure -relief $over
	set Priv($w,prelief) $over
	}
	}
	set Priv(window) $w
	}

	# ::tk::ButtonLeave --
	# The procedure below is invoked when the mouse pointer leaves a
	# button widget. It changes the state of the button back to inactive.
	# Restore any modified relief too.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonLeave w {
	variable ::tk::Priv
	if {[$w cget -state] ne "disabled"} {
	$w configure -state normal
	}

	# Restore the original button relief if it was changed by Tk.
	# That is signaled by the existence of Priv($w,prelief).

	if {[info exists Priv($w,relief)]} {
	if {[info exists Priv($w,prelief)] && \
	$Priv($w,prelief) eq [$w cget -relief]} {
	$w configure -relief $Priv($w,relief)
	}
	unset -nocomplain Priv($w,relief) Priv($w,prelief)
	}

	set Priv(window) ""
	}

	# ::tk::ButtonDown --
	# The procedure below is invoked when the mouse button is pressed in
	# a button widget. It records the fact that the mouse is in the button,
	# saves the button's relief so it can be restored later, and changes
	# the relief to sunken.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonDown w {
	variable ::tk::Priv

	# Only save the button's relief if it does not yet exist. If there
	# is an overrelief setting, Priv($w,relief) will already have been set,
	# and the current value of the -relief option will be incorrect.

	if {![info exists Priv($w,relief)]} {
	set Priv($w,relief) [$w cget -relief]
	}

	if {[$w cget -state] ne "disabled"} {
	set Priv(buttonWindow) $w
	$w configure -relief sunken
	set Priv($w,prelief) sunken

	# If this button has a repeatdelay set up, get it going with an after
	after cancel $Priv(afterId)
	set delay [$w cget -repeatdelay]
	set Priv(repeated) 0
	if {$delay > 0} {
	set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
	}
	}
	}

	# ::tk::ButtonUp --
	# The procedure below is invoked when the mouse button is released
	# in a button widget. It restores the button's relief and invokes
	# the command as long as the mouse hasn't left the button.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonUp w {
	variable ::tk::Priv
	if {[string equal $w $Priv(buttonWindow)]} {
	set Priv(buttonWindow) ""

	# Restore the button's relief if it was cached.

	if {[info exists Priv($w,relief)]} {
	if {[info exists Priv($w,prelief)] && \
	$Priv($w,prelief) eq [$w cget -relief]} {
	$w configure -relief $Priv($w,relief)
	}
	unset -nocomplain Priv($w,relief) Priv($w,prelief)
	}

	# Clean up the after event from the auto-repeater
	after cancel $Priv(afterId)

	if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
	# Only invoke the command if it wasn't already invoked by the
	# auto-repeater functionality
	if { $Priv(repeated) == 0 } {
	uplevel #0 [list $w invoke]
	}
	}
	}
	}

	}

	if {[string equal [tk windowingsystem] "classic"]
	\|\| [string equal [tk windowingsystem] "aqua"]} {

	####################
	# Mac implementation
	####################

	# ::tk::ButtonEnter --
	# The procedure below is invoked when the mouse pointer enters a
	# button widget. It records the button we're in and changes the
	# state of the button to active unless the button is disabled.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonEnter {w} {
	variable ::tk::Priv
	if {[$w cget -state] ne "disabled"} {

	# If there's an -overrelief value, set the relief to that.

	if {$Priv(buttonWindow) eq $w} {
	$w configure -state active
	} elseif {[set over [$w cget -overrelief]] ne ""} {
	set Priv($w,relief) [$w cget -relief]
	set Priv($w,prelief) $over
	$w configure -relief $over
	}
	}
	set Priv(window) $w
	}

	# ::tk::ButtonLeave --
	# The procedure below is invoked when the mouse pointer leaves a
	# button widget. It changes the state of the button back to
	# inactive. If we're leaving the button window with a mouse button
	# pressed (Priv(buttonWindow) == $w), restore the relief of the
	# button too.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonLeave w {
	variable ::tk::Priv
	if {$w eq $Priv(buttonWindow)} {
	$w configure -state normal
	}

	# Restore the original button relief if it was changed by Tk.
	# That is signaled by the existence of Priv($w,prelief).

	if {[info exists Priv($w,relief)]} {
	if {[info exists Priv($w,prelief)] && \
	$Priv($w,prelief) eq [$w cget -relief]} {
	$w configure -relief $Priv($w,relief)
	}
	unset -nocomplain Priv($w,relief) Priv($w,prelief)
	}

	set Priv(window) ""
	}

	# ::tk::ButtonDown --
	# The procedure below is invoked when the mouse button is pressed in
	# a button widget. It records the fact that the mouse is in the button,
	# saves the button's relief so it can be restored later, and changes
	# the relief to sunken.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonDown w {
	variable ::tk::Priv

	if {[$w cget -state] ne "disabled"} {
	set Priv(buttonWindow) $w
	$w configure -state active

	# If this button has a repeatdelay set up, get it going with an after
	after cancel $Priv(afterId)
	set Priv(repeated) 0
	if { ![catch {$w cget -repeatdelay} delay] } {
	if {$delay > 0} {
	set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
	}
	}
	}
	}

	# ::tk::ButtonUp --
	# The procedure below is invoked when the mouse button is released
	# in a button widget. It restores the button's relief and invokes
	# the command as long as the mouse hasn't left the button.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonUp w {
	variable ::tk::Priv
	if {$Priv(buttonWindow) eq $w} {
	set Priv(buttonWindow) ""
	$w configure -state normal

	# Restore the button's relief if it was cached.

	if {[info exists Priv($w,relief)]} {
	if {[info exists Priv($w,prelief)] && \
	$Priv($w,prelief) eq [$w cget -relief]} {
	$w configure -relief $Priv($w,relief)
	}
	unset -nocomplain Priv($w,relief) Priv($w,prelief)
	}

	# Clean up the after event from the auto-repeater
	after cancel $Priv(afterId)

	if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
	# Only invoke the command if it wasn't already invoked by the
	# auto-repeater functionality
	if { $Priv(repeated) == 0 } {
	uplevel #0 [list $w invoke]
	}
	}
	}
	}

	}

	##################
	# Shared routines
	##################

	# ::tk::ButtonInvoke --
	# The procedure below is called when a button is invoked through
	# the keyboard. It simulate a press of the button via the mouse.
	#
	# Arguments:
	# w - The name of the widget.

	proc ::tk::ButtonInvoke w {
	if {[$w cget -state] ne "disabled"} {
	set oldRelief [$w cget -relief]
	set oldState [$w cget -state]
	$w configure -state active -relief sunken
	update idletasks
	after 100
	$w configure -state $oldState -relief $oldRelief
	uplevel #0 [list $w invoke]
	}
	}

	# ::tk::ButtonAutoInvoke --
	#
	# Invoke an auto-repeating button, and set it up to continue to repeat.
	#
	# Arguments:
	# w button to invoke.
	#
	# Results:
	# None.
	#
	# Side effects:
	# May create an after event to call ::tk::ButtonAutoInvoke.

	proc ::tk::ButtonAutoInvoke {w} {
	variable ::tk::Priv
	after cancel $Priv(afterId)
	set delay [$w cget -repeatinterval]
	if {$Priv(window) eq $w} {
	incr Priv(repeated)
	uplevel #0 [list $w invoke]
	}
	if {$delay > 0} {
	set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
	}
	}

	# ::tk::CheckRadioInvoke --
	# The procedure below is invoked when the mouse button is pressed in
	# a checkbutton or radiobutton widget, or when the widget is invoked
	# through the keyboard. It invokes the widget if it
	# isn't disabled.
	#
	# Arguments:
	# w - The name of the widget.
	# cmd - The subcommand to invoke (one of invoke, select, or deselect).

	proc ::tk::CheckRadioInvoke {w {cmd invoke}} {
	if {[$w cget -state] ne "disabled"} {
	uplevel #0 [list $w $cmd]
	}
	}