The standard way, in pygtk, to create a FileChooserDialog is something like:

  fc = gtk.FileChooserDialog()
  fc.add_buttons(gtk.STOCK_CANCEL, 0, gtk.STOCK_OK, 1)
  resp = fc.run()


But what if you want the current selection to be chosen when you
 * double click it, or
 * press Enter?

Simple: call FileChooserDialog.set_default_response(), giving it the response you passed to the desired button:


  fc = gtk.FileChooserDialog()
  fc.add_buttons(gtk.STOCK_CANCEL, 0, gtk.STOCK_OK, 1)
  fc.set_default_response( 1 )
  resp = fc.run()