require "win32ole"
cd = WIN32OLE.new("MSComDlg.CommonDialog")
cd.filter = "All Files(*.*)|*.*" +"|Ruby Files(*.rb)|*.rb"
cd.filterIndex = 2
cd.maxFileSize = 128 # Set MaxFileSize
cd.showOpen()
file = cd.fileName # Retrieve file, path
if not file or file==""
puts "No filename entered."
else
puts "The user selected: #{file}\n"
end