Name

Syntax

Cardinal XtOffsetOf(structure_type, field_name)
Type structure_type;

Field field_name;

Cardinal XtNumber(array)
ArrayVariable array;

Arguments

array

Specifies a fixed-size array.

field_name

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

pointer_type

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

structure_type

Specifies a type that is declared as a structure.

Description

The XtOffsetOf macro expands to a constant expression that gives the offset in bytes to the specified structure member rom the beginning of the structure. It is normally used to statically initialize resource lists and is more portable than XtOffset, which serves the same function.

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

See Also

Table of Contents

• Name
• Syntax
• Arguments
• Description
• See Also