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1 Naming conventions ¶

In general, names in the Lisp Motif interface are derived directly from the C original. The following rules apply:

1. Drop Xt" and Xm (also XmN, XmC, etc.) prefixes
2. Separate words by dashes (-) rather than capitalization
3. Resource names and enumeration values are given as keywords
4. Replace underscores (_) with dashes (-)

Examples:

XtCreateWidget	⇒	create-widget
XmNlabelString	⇒	:label-string
XmVERTICAL	⇒	:vertical

Some exceptions:

• Compound string functions XmString… are prefixed by compound-string- rather than string- in Lisp.

Functions or resources, with the exception of the compound-string-xxx functions, which require compound string arguments, may be given Lisp SIMPLE-STRINGs instead.

The arguments to functions are typically the same as the C Motif equivalents. Some exceptions are:

• Widget creation functions have a &rest arg for resource values.
• Functions which take a string table/length pair in C only take a list of strings in Lisp.
• Registering functions such as ADD-CALLBACK use a &rest arg for registering an arbitrary number of client-data items.