1. Remove option -variable 2. Remove variable _varName which held the value of option -variable 3. Use variable _unsavedSelection in place of $_varName when a value must be stored 4. Add option -command 5. Add variable _command which holds the value of option -command 6. Set the default value for option -help to 1 7. Add command _userCommand to evaluate $_command at stack level #0. _userCommand is called whenever the selected color changes, i.e. instead of setting $_varName. 8. To avoid issues with trace, fully qualify ::SelectColor::_unsavedSelection when its value is set or it is used in a trace command. 9. Use 8.4-compatible syntax for string indices in "string range" commands. 10. Amend SelectColor::_SetWithoutTrace so it sets the colors in the Color Selectors when the value in the entry widget changes.

PURPOSE Tracing the variable set by the "-variable" option is too awkward in practice, and so the "-variable" option has been replaced with "-command" which allows the caller to specify a command to be executed whenever the selected color changes.

The use of the -command option is now included in the demo.

The properties of DynamicHelp balloon help have been changed in the demo, to make the text easier to read.

The manual page has been updated to reflect the changes in color.tcl. check-in: 9f462bd2fa user: kjnash tags: patch-75101