This function selects the best master stream to be used in a synchronized group. It allows a super group to be created that may contain other synchronized groups.
#include <os2.h>
PHSTREAM phstreamMaster; /* Handle address. */
PMASTER paMasterList; /* Stream handle array address. */
ULONG ulNumMasters; /* Number of streams in master list. */
ULONG rc; /* Return code. */
rc = SpiDetermineSyncMaster(phstreamMaster,
paMasterList, ulNumMasters);