Purpose
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| GSLN |
(ltype) |
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| APL code |
1318 |
| GKS RCP code |
X'38001300' (939528960) |
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Function: To set linetype.
Attribute function. Sets the current line type for polyline output
primitives.
Parameters
ltype (specified by user) (fullword integer)
The identifier for a specific line type. This should be either a
negative value indicating an implementation-dependent line type or one of
the following:
- 1 (GLSOLI)
- Solid
- 2 (GLDASH)
- Dash
- 3 (GLDOT)
- Dotted
- 4 (GLDASD)
- Dash-dotted
Operating states
GKOP, WSOP, WSAC, SGOP
Related functions
Polyline (GPL), Set aspect source flags (GSASF), Inquire polyline
facilities (GQPLF), Inquire linetype (GQLN)
Description
This function selects the current polyline line type. The current line
type in the GKS state list is set to the value given by ltype. This value
is used for the display of subsequent polyline primitives created when the
current linetype aspect source flag (ASF) is individual.
The line types specified by negative values of ltype are
implementation-dependent and availability is workstation-dependent. The
following table shows the values for ltype supported by GDDM-GKS.
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| Value |
Line type |
| -4 |
Solid line (same as 1) |
| -3 |
Dash-double-dot line |
| -2 |
Long-dashed line |
| -1 |
Double-dotted line |
| 1 |
Solid |
| 2 |
Dashed line (short dashes) |
| 3 |
Dotted line |
| 4 |
dashed-dotted line |
Here are the four line types guaranteed by GKS:
If you choose a line type that is not supported at a workstation, line
type 1 is used on that workstation.
Principal errors
- 8
- GKS not in proper state: GKS shall be in one of the states GKOP,
WSOP, WSAC, or SGOP
- 63
- Linetype is equal to zero
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GDDM-GKS V1R1 Programming Guide and Reference
Copyright IBM Corporation 1990, 2012
