put-file

• (put-file message parent directory filename extension style) -> string or #f
      message = #f : string or #f
      parent = #f : frame% or dialog% object or #f
      directory = #f : string or #f
      filename = #f : string or #f
      extension = #f : string or #f
      style = null : an empty list of symbols

  Obtains a file pathname from the user via the platform-specific standard (modal) dialog, using parent as the parent window if it is specified.

  The result is #f if the user cancels the dialog, the selected pathname otherwise. The returned pathname may or may not exist, although the style of the dialog is directed towards creating a new file.

  If directory is not #f, it is used as the starting directory for the file selector (otherwise the starting directory is chosen automatically in a platform-specific manner, usually based on the current directory and the user's interactions in previous calls to get-file and put-file). If filename is not #f, it is used as the default filename when appropriate. If extension is not #f, the return path will use the extension if the user does not supply one (Windows).

  The style argument is provided for future extensions. Currently, style must be the empty list.