Return scale view mode used in fullscreen mode.
PRL_RESULT PrlVmCfg_GetFullscreenScaleViewMode( PRL_HANDLE hVmCfg, PRL_SCALE_VIEW_MODE_PTR pnMode );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer to buffer was passed.
PRL_ERR_SUCCESS - function completed successfully.