Stringscan

    end  

    #core method; here we search for a string in text files within a directory and  display a list of matching files in the listbox 
    def stringgrep
        $root.update
        $file_list = []
        $grep_list = []
        $p.start
        $bottomlabel.configure('text' => "Searching for \"#{$searchterm}\" in #{$dirname}")
        $bottomlabel.configure('text' => "Searching for \"#{$searchterm}\" in #{$dirname}...")
        $lbox.delete(0, 'end')
        $tbox.configure('state'=>'normal')
        $tbox.delete('1.0', 'end')
        $tbox.configure('state'=>'disabled')
        $root.update
        Find.find("#{$dirname}") do |path|
            $file_list << path unless FileTest.directory?(path)

                    $lbox.insert('end', "#{i}")
                    f.close
                end
            end
        rescue
            #puts "Search term not found.\n"
        end
        $p.stop
        $grep_list = $lbox.get(0, 'end')
        num = $grep_list.count.to_s
        $bottomlabel.configure('text' => "Found #{num} matches for \"#{$searchterm}\" in #{$dirname}")
    end
rescue
    puts "Directory not found.\n"
    puts "Search complete.\n"

        state 'disabled'
    }.pack('side'=>'left','fill' => 'both', 'expand' => 'yes')
    $tscrollframe = Tk::Frame.new($bottomrightframe).pack('side'=>'right','fill' => 'y', 'expand' => 'no')
    $tscroll = Tk::Tile::Scrollbar.new($tscrollframe).pack('side'=>'right','fill' => 'y', 'expand' => 'no')
    $tbox.yscrollbar($tscroll)
    $labelframe = Tk::Tile::Frame.new($root).pack('side'=>'bottom', 'fill'=>'both', 'expand' => 'no')
    $bottomlabel = Tk::Tile::Label.new($labelframe) {text "No data displayed"}.pack('side' => 'left','fill' => 'both','expand' => 'no')
    $p = Tk::Tile::Progressbar.new($labelframe) {orient 'horizontal'; length 200; mode 'indeterminate'}.pack('side' => 'left','fill' => 'both','expand' => 'no')
    $bottomsep = Tk::Tile::Separator.new($root) { orient 'horizontal' }.pack('side'=> 'bottom', 'fill'=>'both')
    $root.bind("#{$accelkey}-Q", proc{exit})
    $root.bind("#{$accelkey}-q", proc{exit})
    $root.bind("#{$accelkey}-O", proc{choosedir})
    $root.bind("#{$accelkey}-o", proc{choosedir})
    $root.bind("#{$accelkey}-R", proc{stringgrep})
    $root.bind("#{$accelkey}-r", proc{stringgrep})