glade-previewer is a tool that can load and display a User Interface that has been defined with glade. glade itself uses glade-previewer, but it can also be used as a standalone utility.
The following options can be specified:
-f FILENAME, --filename=FILENAMEName of the file to preview.
-t TOPLEVEL, --toplevel=TOPLEVELName of the toplevel to preview.
-l, --listenListen on standard input.
-v, --versionOutput version information and exit.
--display=DISPLAYX display to use.
One of the --filename or --listen options has to be specified.