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.ds f \s-2INQUIRE LIST OF DEPTH CUE INDICES\s+2
.TH "INQUIRE LIST OF COLOUR MAPPING INDICES" 3P+ "29 February 1991"
.SH NAME
INQUIRE LIST OF COLOUR MAPPING INDICES \- inquire the list of defined colour
mapping indices on a workstation
.IX "Colour Mapping" "INQUIRE LIST OF COLOUR MAPPING INDICES"
.IX "Inquiry functions" "INQUIRE LIST OF COLOUR MAPPING INDICES"
.IX "PHIGS Extension Functions" "INQUIRE LIST OF COLOUR MAPPING INDICES"
.SH SYNOPSIS
.SS C Syntax
.ft B
.ta 1.25i 3i
.nf
void 
pinq_list_colr_map_inds ( ws, length, start, error_ind, colr_map_inds, 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	*colr_map_inds;	\fIOUT list of polyline 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
.LP
\s-2INQUIRE LIST OF COLOUR MAPPING INDICES\s+2
obtains a list of the currently defined workstation colour mapping indices.
.SS C Input Parameters
.IP \fIws\fP
The workstation identifier of the workstation whose colour mapping
indices are to be returned.
.IP \fIlength\fP
The number of \fIints\fR in the \fIcolr_map_inds\fR output parameter for which the 
application has allocated memory. \fIlength\fR is the number of list elements
that the system can return in \fIcolr_map_inds\(->ints\fR.
If a value of 0 is used here, no data will be returned in the \fIcolr_map_inds\(->ints\fR
list, but the total number of elements will be returned in \fItotal_length\fR.
.IP \fIstart\fP
Starting position of inquiry.  The elements in the list, beginning
with the item number specified by \fIstart\fR, are copied sequentially into 
\fIcolr_map_inds\(->ints\fR until \fIcolr_map_inds\(->ints\fR is full
or all the elements have been copied.
.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 \fIcolr_map_inds\fP
A pointer to a Pint_list data structure containing the list of
colour mapping indices.
A Pint_list structure is defined as:
.nf
.ta .5i +\w'Pint     'u +\w'num_ints;     'u
.sp .4
typedef struct {
.sp .2
	Pint	num_ints;	/* number of Pints in list */
	Pint	*ints;	/* list of integers */
.sp .2
} Pint_list;
.fi
.IP
The \fInum_ints\fR component specifies the number of elements in the list.
The \fIints\fR component is a pointer to a list \fInum_ints\fR long.
.IP
The application must allocate memory for \fIlength\fR elements in the
list of \fIints\fR.
.fi
.IP \fItotal_length\fP
A pointer to an integer which returns the total length
of the list.  This is the value required for \fIlength\fR if all items in the list
are to be returned.
.SS Execution
If the inquired information is available, the error indicator is returned
as zero and values are returned in the output parameters.
.LP
If the inquired information is not available, the values returned in the
output parameters are undefined and the error indicator
is set to one of the following error numbers to indicate the reason
for nonavailability.
.LP
Since this is an inquiry function, \s-2ERROR HANDLING\s+2 is not 
invoked when an error is detected by this function.
.RE
.SH ERRORS
.IP 003
Ignoring function, function requires state (\s-2PHOP,WSOP,*,*\s+2)
.IP 054
Ignoring function, the specified workstation is not open
.IP 059
Ignoring function, the specified workstation does not have output
capability (that is, the workstation category is neither \s-2OUTPUT\s+2 nor 
\s-2OUTIN\s+2)
.SH SEE ALSO
.nf
.IP
.ta 0.5i
.SM "SET COLOUR MAPPING REPRESENTATION (3P+)"
.SM "SET COLOUR MAPPING INDEX (3P+)"
.SM "INQUIRE COLOUR MAPPING REPRESENTATION (3P+)"
.fi