Device functions

GDDM V3R2 Base Application Programming Reference

Device functions

GDDM V3R2 Base Application Programming Reference
SC33-0868-02

Specifying device characteristics

DSCLS

Closes a device so that it can no longer be used.

DSCMF

Sets the User Control function.

DSDROP

Stops a device being either primary or alternate.

DSOPEN

Opens a device and makes its details known to GDDM.

DSRNIT

Closes and reinitializes a device.

DSUSE

Specifies a device as either primary or alternate.

Querying device characteristics

DSQCMF: Queries the User Control function.
DSQDEV: Returns the characteristics of the device. The returned data reflects that specified on DSOPEN together with additional information concerning the device properties.
DSQUID: Returns an unused identifier that may be used on DSOPEN.
DSQUSE: Returns the identifier of the primary or alternate device.
FSQURY: Returns information on the device, partition, graphics, image, image cursor, and scanner characteristics of the primary device.