The following code snippet would do the job.
BOOL purePaperSpace () {
struct resbuf res ;
acedGetVar (L"tilemode", &res) ;
int tilemode =res.resval.rint ;
acedGetVar (L"cvport", &res) ;
int cvport =res.resval.rint ;
return (tilemode == 0 && cvport == 1) ;
}