Returns the version of the operating system for which the specified template is running.
PRL_RESULT PrlCtTemplate_GetOsVersion( PRL_HANDLE hTemplate, PRL_UINT32_PTR pnOsVersion );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_NO_DATA - the OS information is not present in the template configuration.
PRL_ERR_SUCCESS - function completed successfully.
The OS versions are defined in the PrlOses.h file as macros. Look for the macros that are prefixed with PVS_GUEST_VER_ (e.g. PVS_GUEST_VER_LIN_REDHAT).