GDDM-GKS V1R1 Programming Guide and Reference
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GSCHH

GDDM-GKS V1R1 Programming Guide and Reference
SC33-0334-00
Purpose
 GSCHH  (chh)
   
 APL code  1331
 GKS RCP code  X'38001F00' (939532032)
   
Function: To set character height.
Attribute function. Sets the character height for text primitives in world coordinate units.
Parameters

chh (specified by user) (short floating point)
The character height in world coordinates.
Operating states
GKOP, WSOP, WSAC, SGOP
Related functions
Set character expansion factor (GSCHXP), Inquire character height (GQCHH), Inquire character width (GQCHW)
Description
This function sets the character height for output primitives, in world coordinate units. The "current character height" and "current character width" entries in the GKS state list are set to the value specified by chh. The width-to-height ratio of characters when they are displayed at a workstation can be varied using the Set character expansion factor (GSCHXP) function.
Principal errors
8
GKS not in proper state: GKS shall be in one of the states GKOP, WSOP, WSAC, or SGOP
78
Character height is less than or equal to zero

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