Code Before Modifying for VCS Error Reporting System

my_func()
{
WINDOWPTR wnp;

wn_def(5, 0, 5, 25, LNORMAL, BDR_DLNP);
if(wn_up(wnp) ) == 0)
return(0);
v_st("Hello, world.", wnp);
wn_dn(wnp);
...
...
...
return(1);
}