Determines the specified virtual machine I/O priority.
PRL_RESULT PrlVmCfg_GetIoPriority( PRL_HANDLE hVmCfg, PRL_UINT32_PTR pnVmIoPriority );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_NO_DATA - the virtual machine object does not contain the necessary data.
PRL_ERR_SUCCESS - function completed successfully.