.ds Vv 1.2.14 .TH VistaIONumber 3 "19 January 1993" "VistaIO Version \*(Vv" .SH NAME VistaIONumber - determine the number of array elements .SH SYNTAX .nf .B "#include " .PP .ft B size_t VistaIONumber (\fIarray\fP) .RS ArrayVariable \fIarray\fP; .RE .fi .SH ARGUMENTS .IP \fIarray\fP 10n Specifies a fixed-size array. .SH DESCRIPTION The \fBVistaIONumber\fP macro returns the number of elements in the specified array (computed as the size of the array divided by the size of an array element). .SH "SEE ALSO" .SH NOTES It is equivalent to the X Toolkit macro \fBXtNumber\fP(3Xt).