gistfile1.rb

require "korundum4"

class MyHighlighter < Qt::SyntaxHighlighter
  def highlightBlock(line)
    puts "highlightBlock"
    setCurrentBlockUserData(Qt::TextBlockUserData.new)
  end
end

class MyEdit < Qt::TextEdit
  def initialize
    super
    @highlighter = MyHighlighter.new(document)
#    connect(self, SIGNAL("textChanged()")) do
#      puts "textChanged"
#      textCursor.block.setUserData(Qt::TextBlockUserData.new)
#    end
  end
end

app = Qt::Application.new(ARGV)

w = MyEdit.new
w.show

app.exec