Execution to the  _tfindfirst(), _findclose(), _tfindnext()  functions results in an error: 0xC0000005, the program crashes. For example, the  following code：

long  hand;            //the  type of hand change from long to long long

hand  = _tfindfirst((TCHAR *)sDbfPath, &fb);

if(hand  != -1L)

{  

         bFind = TRUE;

_findclose(hand);  

}

You should change the type  of hand from long to long long.

C:\ZWCAD_2021_ZRXSDK\DocZRX_Migration_Manual.chm