wcsncpy error in AutoCAD2013'ARX and X64

[cutechun]

int schdim(resbuf *rb)
{
 TCHAR dimn[5], bname[30],chang[30];

 wcscpy(bname, _T("dimn50"));
 ads_printf(_T("\nbname=%s\n"), bname);

 wcscpy(dimn, _T("abcd"));
 ads_printf(_T("\ndimn=%s\n"), dimn);

 wcsncpy(bname, dimn, 4);
 ads_printf(_T("\nbname=%s\n"), bname);

}

the sample code above , but the result of "bname" is error!!

result list:

bname=dimn50
dimn=abcd
bname=abcd

I'm waiting for any suggestion, thank you.

[owenwengerd]

What exactly is the problem?

[cutechun]

Execute the Code:

        wcsncpy(bname, dimn, 4);

The correct result is: "abcd50"

[Balaji_Ram]

Hi,

Your query is still not clear.

I have attached the output of the code snippet when I tried it with AutoCAD 2013.

It is the same as what you are expecting.