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.TH "INQUIRE LIST OF VIEW INDICES" 3P "29 February 1991"
.SH NAME
INQUIRE LIST OF VIEW INDICES\- inquire list of view indices
defined on a workstation
.SH SYNOPSIS
.SS C Syntax
.ft B
.ta 1.25i 3i
.nf
void
pinq_list_view_inds ( ws, length, start, error_ind, indices, total_length )
Pint	ws;	\fIworkstation identifier\fP
Pint	length;	\fIlength of application list\fP
Pint	start;	\fIstarting position\fP
Pint	*error_ind;	\fIOUT error indicator\fP
Pint_list	*indices;	\fIOUT list of view indices\fP
Pint	*total_length;	\fIOUT length of list in PHIGS\fP
.fi
.ft R
.SS Required PHIGS Operating States
(PHOP, WSOP, *, *)
.SH DESCRIPTION
.SS Purpose
Use \s-2INQUIRE LIST OF VIEW INDICES\s+2 to obtain a list of the
currently defined view indices on the specified workstation.  
The list is in order of decreasing view transformation input priority.
.LP
The defined view table indices are \fIconceptually sparse\fP;  a \s-2PHIGS\s+2
implementation could allow definition of \fIn\fP view representations
with arbitrary indices.  
However, view indices are
\fInonsparse\fP in \s-2PEX-SI\s0;  the \fIn\fP settable 
view representations
necessarily have indices 1 through \fIn\fP.
.SS C Input Parameters
.IP \fIws\fP
The \fIworkstation identifier\fP of the workstation
whose view indices are to be returned.
.IP \fIlength\fP
Number of items for which the application has allocated memory
in the output parameter \fIindices\fP.
0 can be specified, in order to get the \fItotal length\fP of the list.
.IP \fIstart\fP
Starting position in the ordered list at which to begin the inquiry.
.SS C Output Parameters
.IP \fIerror_ind\fP
A pointer to the location to store the error number of any error
detected by this function.
.IP \fIindices\fP
A pointer to a Pint_list structure
in which the system returns the portion of the
list of currently defined view indices,
starting at the entry specified with \fIstart\fP.
.IP
Pint_list is defined in phigs.h as follows:
.nf
.ta .5i +\w'Pint   'u +\w'num_ints;    'u
.sp .3
typedef struct {
.sp .2
	Pint   num_ints;		/* number of Pints in list */
	Pint   *ints;		/* list of integers */
.fi
.sp .2
} Pint_list;
.sp .5
The pointer \fIindices\fR\(->\fIints\fR must be initialized to an array of
\fIlength\fP \fIPint\fP elements.
.IP \fItotal_length\fP
A pointer to an integer in which to return the \fItotal length\fP of
the list.
This is the value required for \fIlength\fP if all the items in the
list are to be returned.
.SH ERRORS
.IP 003
Ignoring function, function requires state 
(\s-2PHOP\s+2, \s-2WSOP\s+2, \s-2*\s+2, \s-2*\s+2)
.IP 054
Ignoring function, the specified workstation is not open
.IP 057
Ignoring function, specified workstation is of category \s-2MI\s+2
.SH SEE ALSO
.nf
.IP
.ta 0.5i
.SM "SET VIEW REPRESENTATION (3P)"
.SM "INQUIRE VIEW REPRESENTATION (3P)"
.SM "INQUIRE PREDEFINED VIEW REPRESENTATION (3P)"
.fi