graPHIGS Programming Interface: Subroutine Reference

The graPHIGS Programming Interface : Subroutine Reference

GPQAGD - Inquire List of Actual Generalized Drawing Primitives

GPQAGD (wsid, start, number, errind, ngdp, lgdp)

Purpose

Use GPQAGD to inquire the actual generalized drawing primitives (GDP) available on the specified workstation.

The graPHIGS API returns the number of primitives available, and their GDP identifiers.

If the inquired information is available, then the graPHIGS API sets the error indicator to zero and returns the values in the output parameters. If the error indicator is 543 (the start value exceeds the extent of the available data), then only the total number (totnum) parameter is set. If the inquired information is unavailable, then the error indicator (errind) contains an error number indicating the reason, and the values returned in the output parameters are unpredictable.

Parameters

wsid -- specified by user, fullword integer

Workstation identifier.

start -- specified by user, fullword integer

Starting member of the list of GDP identifiers (>=1)

number -- specified by user, fullword integer

Number of GDP identifiers requested (>=0)

errind -- returned by the graPHIGS API, fullword integer

Error indicator. If the error indicator is zero, the request has been completed. Otherwise, one of the following errors exists:

25: SPECIFIED WORKSTATION DOES NOT EXIST
35: WORKSTATION HAS ONLY INPUT CAPABILITIES
538: START VALUE < ONE
539: REQUESTED NUMBER < ZERO
543: START EXCEEDS DATA EXTENT. TOTAL NUMBER AVAILABLE RETURNED

ngdp -- returned by the graPHIGS API, fullword integer

Total number of supported GDP identifiers (>=1)

lgdp -- returned by the graPHIGS API, array of fullword integers.

List of GDP identifiers. GDP identifiers are as follows:

1001 - Pixel 3
1002 - Pixel 2
1003 - Disjoint Polyline 3
1004 - Disjoint Polyline 2
1005 - Circle 2
1006 - Circular Arc 2
1007 - Ellipse 2
1008 - Ellipse 3
1009 - Elliptical Arc 2
1010 - Elliptical Arc 3
1014 - Polyline Set 3 With Data
1016 - Polygon 3 With Data
1017 - Polygon 2 With Data
1020 - Marker Grid 3
1021 - Marker Grid 2
1022 - Line Grid 3
1023 - Line Grid 2
1027 - Composite Fill Area 2
1029 - Triangle Strip 3
1031 - Quadrilateral Mesh 3
1033 - Non-Uniform B-Spline Curve 3
1034 - Non-Uniform B-Spline Curve 2
1035 - Non-Uniform B-Surface
1036 - Trimmed Non-Uniform B-Spline Surface
1037 - Polyhedron Edge
1039 - Character Line 2
1046 - Polysphere

Note:

The output array must be large enough to contain the requested data.

Error Codes

None

Related Subroutines

GPQGD: Inquire List of Generalized Drawing Primitives
GPQRCT: Inquire Realized Connection Type

RCP code

201336579 (X'0C002703')