General options

       --title=TITLE
              Set the dialog title

       --window-icon=ICONPATH
              Set  the  window  icon  with  the  path to an image. Alternatively, one of the f\
our stock icons can be used: 'error', 'info',
              'question' or 'warning'

       --width=WIDTH
              Set the dialog width

       --height=HEIGHT
              Set the dialog height