Up to 16 handles can be opened, each with their own device change hook. The handle ID is specified in the open request as the "mode". IPC_EINVAL will be returned if an ID that is in use is passed. | Up to 16 handles can be opened, each with their own device change hook. The handle ID is specified in the open request as the "mode". IPC_EINVAL will be returned if an ID that is in use is passed. |