This function cancels, holds, continues, or restarts a print device.
#define INCL_SPL /* Or use INCL_PM, */
#include <os2.h>
PSZ pszComputerName; /* Name of computer where print device is to be controlled. */
PSZ pszPortName; /* Port name. */
ULONG ulControl; /* Operation to perform. */
SPLERR rc; /* Return code. */
rc = SplControlDevice(pszComputerName, pszPortName,
ulControl);