Modifies the specified screen resolution width.
PRL_RESULT PrlScrRes_SetWidth( PRL_HANDLE hVmScrRes, PRL_UINT32 nWidth );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.