【奇怪了 Left Right GetLength 都不起作用】

[bluestar2009]

void CMy20120417mfcDlg::ReadData() 
{
	// TODO: Add your control notification handler code here
	CString str; 
	
	//CFileDialog fileDlg(TRUE); 
	//if(fileDlg.DoModal() == IDOK) 
	//{ 
		CFile file; 
		//file.Open(fileDlg.GetPathName(),CFile::modeReadWrite);
		file.Open("data.txt",CFile::modeReadWrite);
		
		file.Read(str.GetBuffer(file.GetLength()),(UINT)file.GetLength()); 
		//GetDlgItem(  )->SetWindowText(str); 
		file.Close();
	//}
	
	int len = str.GetLength();
	CString t;
	t.Format("%d",len);
	AfxMessageBox(t);

	char ch[10000] = {0};
	
	char *start,*tail;
	char tmp[100]={0};
	int index=1,j=1;
	memcpy(ch,str,len);
	start=tail=ch;

	CString tmp1;
	tmp1.Format("%d",index);
	int nRow = m_List.InsertItem(index, tmp1);//插入行
	while (*start!='\0')
	{
		if (*start=='<' )
		{
			while ( *tail!='\0')
			{
				if (*tail=='>')
				{
					start++;
					strncpy(tmp,start,tail-start);
					m_List.SetItemText(nRow, j++, tmp);//设置数据 
					if (j==10)
					{
						j=1;
						index++;
						tmp1.Format("%d",index);
						nRow = m_List.InsertItem(index, tmp1);//插入行
					}
					tail++;
					start = tail;
					break;
				}
				tail++;
			}
		}
		start++;
	}

	AfxMessageBox(str);	

	::MessageBox(NULL,"找到","Warnning",MB_OK);
	
	
	//写入数据
// 	for (index=1;index<=10;index++)
// 	{
// 		CString tmp;
// 		tmp.Format("%d",index);
// 		int nRow = m_List.InsertItem(index, tmp);//插入行
// 		for (int j=1;j<=10;j++)
// 		{
// 			m_List.SetItemText(nRow, j, "text");//设置数据 
// 		} 
// 	}

}

data.txt文件的内容格式如下
1: <1001.3,26.4> <1002.3,26.7> <1003.3,26.7> <1004,26.7> <1005.3,26.7> <1006.3,26.7> <1007.3,26.7> <1008.3,26.7> <1009.3,26.7> <1010.3,26.7>
2: <998.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7>
3: <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7>
4: <998.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7>
5: <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7>
6: <998.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7> <1002.3,26.7>

就是想把这些数据都填充到 List里

结果神奇了 从文件读取的str

Left Right 甚至连GetLength 都不吃

用Find找到\r\n换行符 准备以换行符为位置拆分

结果 不管是Left 还是Right 都拆不开

用GetLength 直接连长度也是0

但是输出的确是文件里全部内容

[fenshucangku]

CString str;

//CFileDialog fileDlg(TRUE);
//if(fileDlg.DoModal() == IDOK)
//{
CFile file;
//file.Open(fileDlg.GetPathName(),CFile::modeReadWrite);
file.Open("data.txt",CFile::modeReadWrite);

file.Read(str.GetBuffer(file.GetLength()),(UINT)file.GetLength());
//GetDlgItem( )->SetWindowText(str);
file.Close();
//}

【str.ReleaseBuffer();】

int len = str.GetLength();

see msdn

[bluestar2009]

[Quote=引用 1 楼 的回复:]
CString str;

//CFileDialog fileDlg(TRUE);
//if(fileDlg.DoModal() == IDOK)
//{
CFile file;
//file.Open(fileDlg.GetPathName(),CFile::modeReadWrite);
file.Open("data.txt",CFil……
[/Quote]

十分感谢 好了 但是是宽字符的 需要在哪里调成单字符？

我担心一会儿进行转换的时候出错