[MACTCL] Text Scroll Bar Tk 8.6.10

[Kevan H. <ha...@br...>]

Greetings,

I'm running on MacOS Catalina 10.15.5. I have TclTk 8.6.10, compiled from sources. I execute the following to create a text window.

catch {destroy .f}
frame .f
pack .f -side top -fill both
text .f.text -relief sunken -border 2 -setgrid 1 -height 10 -width 20 -wrap none
.f.text configure -yscrollcommand ".f.vsb set"
scrollbar .f.vsb -orient vertical -command ".f.text yview"
pack .f.vsb -side right -fill y
.f.text configure -xscrollcommand ".f.hsb set"
scrollbar .f.hsb -orient horizontal -command ".f.text xview"
pack .f.hsb -side bottom -fill x
pack .f.text -expand yes -fill both
for {set i 0} {$i <20} {incr i} {
   .f.text insert end "$i\: This window should have scroll bars.\n" end
}

In TclTk 8.5, this works fine. In 8.6.10 it works fine on Windows and Linux it works fine. On MacOS 10.15 I get the text window, but the scroll bar buttons are invisible and the scrolling is unreliable. Sometimes the lines get garbled up as I scroll with the trackpad. The scroll bar buttons appear to be present, because if I click on one by luck, I can drag it up and down. I tried increasing the elementborderwidth and border of the scrollbars, but that did not make the buttons appear. On MacOS 10.13 I see the same problems.

Is there some adjustment to the text or scrollbar widgets I need to make to get them to appear?

Best, Kevan

-- 
Kevan Hashemi, Electrical Engineer
Physics Department, Brandeis University
http://www.bndhep.net