-initialcolor black bug in Insight Tk color picker

[Lloyd Wood <L dot Wood at surrey dot ac dot uk>]

Hi,

I've written code that exercises the Tk color picker in Insight Tcl/Tk under Cygwin. However, the picker does not always work as I would expect.

When -initialcolor is set to black or #000000 (#000) behaviour of the color picker is unexpected. Clicking on a color from the selector box does not update the color/solid square at bottom to match the selected color, unless the user also moves the black/white slider at right.

Sample code for wish showing this behaviour is below. The color/solid box stays black unless you also move the vertical slider.

#!/usr/bin/wish

set startcolor #000000
set color [tk_chooseColor -initialcolor $startcolor  \
              -title "testing setting color"]

if {($color == "") } {
      puts "cancelled"
      return
}
puts $color



starting with
set color black
or
set color #000 
or even 
set color \#000
shows the same behaviour. I've tried the 0x000000 hex notation you would expect for setting a hex value, but that gets me a complaint about an unknown colour. If I say e.g.
set startcolor yellow
the color/solid box works and is updated just as you would expect.

Why is only black/zero special here? It should be just another colour.

thanks,

L.

<http://www.ee.surrey.ac.uk/Personal/L.Wood<L.Wood@surrey.ac.uk