跪求大神 Win32文件操作

Question

使用Unicode字符集
当WriteFile键入\r\n的时候，会有多余的一个空格出来
这个空格应该是一个-t的制表符
我自定义了一个文件格式ded，但是用txt打开

代码：

HANDLE hFile = ::CreateFile(wchFilePath, GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

DWORD dwSize = 0;
WORD wUnicode = 0xfeff;
wchar_t wchMPtitle[] = _T("[MemoryPool]\r\n");
wchar_t wchMPdefault[] = _T("MemoryPool=MemoryConfigDefault\r\n");
wchar_t wchMPdefaulttitle[] = _T("[MemoryConfigDefault]\r\n");
wchar_t wchMPidynccount[] = _T("iDyncCount=10\r\n");
wchar_t wchMPsubmemheadsize[] = _T("iSubMemHeadSize=128");

::WriteFile(hFile, &wUnicode, sizeof(wUnicode), &dwSize, NULL);
::WriteFile(hFile, wchMPtitle, sizeof(wchMPtitle), &dwSize, NULL);
::WriteFile(hFile, wchMPdefault, sizeof(wchMPdefault), &dwSize, NULL);
::WriteFile(hFile, wchMPdefaulttitle, sizeof(wchMPdefaulttitle), &dwSize, NULL);
::WriteFile(hFile, wchMPidynccount, sizeof(wchMPidynccount), &dwSize, NULL);
::WriteFile(hFile, wchMPsubmemheadsize, sizeof(wchMPsubmemheadsize), &dwSize, NULL);

输出结果：
[MemoryPool]
MemoryPool=MemoryConfigDefault
[MemoryConfigDefault]
iDyncCount=10
iSubMemHeadSize=128

问题是如何才能去掉那个制表符呢？

Answer 1

因为你写入的时候使用sizeof ,sizeof 对应的字符串数组，如果没有指定大小，最后要把\0 算进去，所以最后的空格是\0\0;
下面修改一下就OK了。

        ::WriteFile(hFile, &wUnicode, sizeof(wUnicode), &dwSize, NULL);
        ::WriteFile(hFile, wchMPtitle, wcslen(wchMPtitle)*2, &dwSize, NULL);
        ::WriteFile(hFile, wchMPdefault, wcslen(wchMPdefault)*2, &dwSize, NULL);
        ::WriteFile(hFile, wchMPdefaulttitle, wcslen(wchMPdefaulttitle)*2, &dwSize, NULL);
        ::WriteFile(hFile, wchMPidynccount, wcslen(wchMPidynccount)*2, &dwSize, NULL);
        ::WriteFile(hFile, wchMPsubmemheadsize, wcslen(wchMPsubmemheadsize)*2, &dwSize, NULL);