wcstombs_s函数

[wenbo228228]

if (OpenClipboard())
	{
		EmptyClipboard();

	}
	CString strSend;
	GetDlgItemText(IDC_EDIT_SEND, strSend);
	int val = strSend.GetLength()*sizeof(TCHAR)+sizeof(TCHAR);
	HANDLE hClip=GlobalAlloc(GMEM_MOVEABLE,val );
	char* pBuf=(char*)GlobalLock(hClip);
	//这个宽字节转多字节的函数运行正常
	//int n=WideCharToMultiByte(CP_ACP, 0, strSend.GetBuffer(), -1, pBuf, val, NULL, NULL);
	size_t n ;
	errno_t err;
	err=wcstombs_s(&n, pBuf, (size_t)10, strSend.GetBuffer(), (size_t)10);
	if (EILSEQ == err)
	{
		MessageBox(_T("encounters a wide character it cannot convert to a multibyte character"));
		return;
	}
	//n=0
	GlobalUnlock(hClip);
	SetClipboardData(CF_TEXT, hClip);
	CloseClipboard();

大家帮忙看看为什么wcstombs_s函数老是返回EILSEQ ？

[Eleven]

If wcstombs_s encounters a wide character it cannot convert to a multibyte character, it puts 0 in *pReturnValue, sets the destination buffer to an empty string, sets errno to EILSEQ, and returns EILSEQ. 那要看看你源字符串中是什么

[wenbo228228]

引用 1 楼 VisualEleven 的回复:

If wcstombs_s encounters a wide character it cannot convert to a multibyte character, it puts 0 in *pReturnValue, sets the destination buffer to an empty string, sets errno to EILSEQ, and returns EILSEQ. 那要看看你源字符串中是什么

不管我在IDC_EDIT_SEND对应的编辑框内输入什么都是转换失败，我试了“as按时”,"asd"都是不行，转换不行不能怪字符串吧，就算再奇葩的字符串应该都可以转换啊

[赵4老师]

void HexDump(char *buf,int len,int addr) {
    int i,j,k;
    char binstr[80];

    for (i=0;i<len;i++) {
        if (0==(i%16)) {
            sprintf(binstr,"%08x -",i+addr);
            sprintf(binstr,"%s %02x",binstr,(unsigned char)buf[i]);
        } else if (15==(i%16)) {
            sprintf(binstr,"%s %02x",binstr,(unsigned char)buf[i]);
            sprintf(binstr,"%s  ",binstr);
            for (j=i-15;j<=i;j++) {
                sprintf(binstr,"%s%c",binstr,('!'<buf[j]&&buf[j]<='~')?buf[j]:'.');
            }
            printf("%s\n",binstr);
        } else {
            sprintf(binstr,"%s %02x",binstr,(unsigned char)buf[i]);
        }
    }
    if (0!=(i%16)) {
        k=16-(i%16);
        for (j=0;j<k;j++) {
            sprintf(binstr,"%s   ",binstr);
        }
        sprintf(binstr,"%s  ",binstr);
        k=16-k;
        for (j=i-k;j<i;j++) {
            sprintf(binstr,"%s%c",binstr,('!'<buf[j]&&buf[j]<='~')?buf[j]:'.');
        }
        printf("%s\n",binstr);
    }
}