Create a user interface

Use Glade, the UI editor for GNOME to create a user interface. Glade produces XML files that describe attributes of an application.

When creating a UI file using Glade, the ID that you specify in Glade is the ID that you will later need to use to get the object from the UI file.

Create a new window, then set ID to window1 and Title to Hello World:

Save the file with File ▸ Save As and name it helloworld.glade.