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- The code makes generous use of EVAL in order to implement the following
- features:
-
- (1) References to variables by name. Used to associate variables with
- gadgets in dialog windows. Equivalent to the '&' operator in C.
-
- (2) Callback functions. Used to register exit functions (to close open
- files), and window handling functions (to pass on Wimp events to the dialog
- library).
-
- (3) To call routines from dynamically loaded libraries. The name is
- constructed at run-time from a stub and a suffix.
-
- (4) Convenient saving and restoring of values in the Choices file.
-
-