[Tcl-bugs] [Tk Source Code] New ticket [61bfd35c57a90372b3025d7f2915674c89ffee45|61bfd35c57] Scrollbars keep flickering indefinitely after being destroyed.

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Ticket Change [24672bc088cf9331c4066a9564cf10384d2372da]
  [New ticket [61bfd35c57a90372b3025d7f2915674c89ffee45|61bfd35c57] Scrollbars keep flickering indefinitely after being destroyed.]
  By      linusnyberg
  For     Tk Source Code
  On      2014-12-21T20:41:49.195
  Details http://core.tcl.tk/tk/tinfo?name=24672bc088cf9331c4066a9564cf10384d2372da
  Ticket  http://core.tcl.tk/tk/tktview/61bfd35c57a90372b3025d7f2915674c89ffee45

Changed Fields
  assignee:        nobody
  closer:          nobody
  comment:         The problem is Mac-only. It has been introduced some time AFTER Tcl/Tk
                   8.6.1. The below replication steps do not cause flickering there.
                   Replicated with latest source (8.6.3) as of 2014-12-21:

                   Do:  - Run the below script in Wish.  - Move the mouse around in the
                   window.  - Also try resizing the window.

                   Happens:  Each time the mouse motion even triggers, the since-long
                   destroyed scrollbar keeps appearing (flickering) on the screen.

                   Expected:  That the scrollbar is simply gone, since it was destroyed.

                   Here's the script:  ###########################  proc main {} {
                   console show  wm geometry . 800x600  frame .f -width 750 -height 550
                   -bg grey75  place .f -x 50 -y 50 -anchor nw  button .f.b -text hello
                   place .f.b -x 100 -y 100 -anchor nw  set w [create_window .f 10 10 300
                   300]  update  destroy $w

                   bind all <Motion> {  .f.b configure -text [clock seconds]  }  }

                   proc create_window {parent_w x y width height} {  set w
                   $parent_w.c_container  frame $w -bg grey75 -bd 0 -width $width -height
                   $width  scrollbar $w.vscroll -command "$w.c yview"  canvas $w.c
                   -highlightthickness 0 -width [expr {$width - 15}] -height [expr
                   {$width}] -relief sunken -bg grey85 -bd 0 -yscrollcommand "$w.vscroll
                   set"  grid $w.c -padx 1 -pady 1 -row 0 -column 0 -rowspan 1
                   -columnspan 1 -sticky news  grid $w.vscroll -padx 1 -pady 1 -row 0
                   -column 1 -rowspan 1 -columnspan 1 -sticky news

                   place $w -x $x -y $y -anchor nw  return $w  }

                   after 10 main
  foundin:         8.6.3
  is_private:      0
  login:           linusnyberg
  priority:        5 Medium
  private_contact: 14b3a2938e33673267beada540e11569b4c12b7b
  resolution:      None
  severity:        Severe
  status:          Open
  submitter:       linusnyberg
  subsystem:       66. Aqua Window Operations
  title:           Scrollbars keep flickering indefinitely after being destroyed
  type:            Bug

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