NAME

inq_traversal_depth − return maximum depth of display list traversal

SYNOPSIS

C Syntax:

void inq_traversal_depth(fildes,depth)
int fildes,*depth;

FORTRAN77 Syntax:

subroutine inq_traversal_depth(fildes,depth)
integer*4 fildes, depth

Pascal Syntax:

procedure inq_traversal_depth(fildes:integer; var depth:integer);

DESCRIPTION

Input Parameters

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

Output Parameters

depth Maximum depth of traversal

Discussion

Inq_traversal_depth returns the maximum depth of traversal of the specified graphics device. 

If, during traversal, the depth of traversal would exceed the maximum depth of traversal for the display list, a warning is generated and the call_segment element causing the condition is not traversed. 

ERRORS

1 Graphics device not initialized for this operation. 

SEE ALSO

display_element(3G), display_segment(3G), pick_from_segment(3G), refresh_element(3G),
refresh_segment(3G), set_traversal_depth(3G).

Hewlett-Packard Company  —  December 25, 1986