Returns the virtual machine addition state information.
PRL_RESULT PrlVmInfo_GetAdditionState( PRL_HANDLE handle, VIRTUAL_MACHINE_ADDITION_STATE_PTR pVmState );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_NO_DATA - the virtual machine state information is not available.
PRL_ERR_SUCCESS - function completed successfully.