NAME

vad, vers, ver - add to and erase components of the visual display

SYNOPSIS

#include "mpict_p.h"

vad(pic)
PICT pic;

vers (pic) PICT pic;

ver ()

DESCRIPTION

vad adds a top picture to the current display. pic must be a PICT returned by mktop or mkpar having the P_TOP flag set. The default limit on the number of pictures that can be displayed at one time is 30. This limit can be changed by calling mginit(3U) ) before the first call to vad.

vers erases a single top picture from the current display. pic specifies a top picture that was previously an argument to vad.

ver erases the entire display.

On successful completion, vad, vers, and ver return 0.

DIAGNOSTICS

vad returns -1 and prints error messages for the following:

vers returns -1 and prints error messages for the following: