Enables or disables the feature service headless mode.
PRL_RESULT PrlDispCfg_SetHeadlessModeEnabled( PRL_HANDLE hDispConfig, PRL_BOOL bEnabled );
PrlApiDeprecated.h
PRL_RESULT. Possible values are:
PRL_ERR_INVALID_ARG - invalid handle was passed.
PRL_ERR_SUCCESS - function completed successfully.