When you run this code, you should see the label displayed with a different font than the font that originally appeared. All the font names will be in the file. This will get a 25 point times font. Then call XtGetValues to get the resource values requested. You can also use XtVaGetValues just like you use XtVaSetValue, but pass the address of the resources you want to retrieve.
Resources are the key to understanding the widgets.
It is also possible to set resources through resource files, and to create your own resources - more on that in a later tutorial. Here are the resource lists for the widget we used in this tutorial, along with its ancestors. You can also download the complete resource summary for all of the Motif widgets from the ITI FTP Site . See the file named motif.widget.reference. This file will be extremely useful in the following tutorials.