NAME

clear_view_surface − all, or a portion of, the physical view surface is set to the background_color. 

SYNOPSIS

C SYNTAX

void clear_view_surface(fildes);
int fildes;

FORTRAN77 SYNTAX

        subroutine clear_view_surface(fildes)
        integer*4 fildes

PASCAL SYNTAX

procedure clear_view_surface(fildes:integer);

HP-UX COMPATIBILITY

Level: HP-UX/STANDARD

Origin: ANSI Computer Graphics Interface

DESCRIPTION

INPUT PARAMETER

fildes
is an integer file descriptor returned by gopen when an I/O path to a graphic device is opened. 

DISCUSSION

Clear_view_surface repaints a portion of the view surface as indicated by clear_control, with the index set by the last background_color call.  Only planes that are write enabled are affected. A replacement rule of 3 (source) is used regardless of the one set with drawing_mode. 
 
Continuous feed hard copy devices may perform a new page action based upon the setting of clear_control. 

SEE ALSO

clear_control(3g), background_color(3g), drawing_mode(3g), write_enable(3g). 

Hewlett-Packard Company  —  May 11, 2021