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XtOffset(3)                                     XT FUNCTIONS                                     XtOffset(3)



NAME
       XtOffset, XtOffsetOf, XtNumber - determine the byte offset or number of array elements

SYNTAX
       Cardinal XtOffset(Type pointer_type, Field field_name);

       Cardinal XtOffsetOf(Type structure_type, Field field_name);

       Cardinal XtNumber(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 XtOffset macro is usually used to determine the offset of various resource fields from the begin-ning beginning
       ning of a widget and can be used at compile time in static initializations.

       The XtOffsetOf macro expands to a constant expression that gives the offset in bytes to the specified
       structure member from 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
       XtGetResourceList(3Xt), XtSetArg(3Xt)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface



X Version 11                                     libXt 1.0.5                                     XtOffset(3)