MCI_GROUP Return Value - rc

rc (ULONG)

Return codes indicating success or type of failure:

MCIERR_SUCCESS

If the function succeeds, 0 is returned.
MCIERR_DUPLICATE_ALIAS
An alias is already in use.
MCIERR_GROUP_COMMAND
An unsupported GROUP command is sent to a group.
MCIERR_FLAGS_NOT_COMPATIBLE
Flags cannot be used together.
MCIERR_ID_ALREADY_IN_GROUP
A device ID or alias references an instance already in another group.
MCIERR_INVALID_GROUP_ID
An invalid group ID is passed.

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