Name

XtOffset, XtNumber − determine the byte offset or number of array elements

Syntax

Cardinal XtOffset(pointer_type, field_name)
   Type pointer_type;
   Field field_name;

Cardinal XtNumber(array)
   ArrayVariable array;

Arguments

arraySpecifies a fixed-size array. 

field_nameSpecifies the name of the field for which to calculate the byte offset. 

pointer_typeSpecifies a type that is declared as a pointer to the structure. 

Description

The XtOffset macro is usually used to determine the offset of various resource fields from the beginning of a widget and can be used at compile time in static initializations.

The XtNumber macro returns the number of elements in the specified argument lists, resources lists, and other counted arrays.

See Also

XtGetResourceList(3Xt), XtSetArg(3Xt)
X Window System Toolkit: The Complete Programmer’s Guide and Specification, Paul J. Asente and Ralph Swick
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys