MapViewOfFile和unicode

本文介绍了MapViewOfFile和unicode的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想创建一个文件映射并修改我的文件，但是当我修改我的文件时，却不是我想要的，我的英语很差，您可以看到此代码
我的项目是unicode

i want create a filemapping and modify my file,but when i modify my file ,but it not what i want,my english is very poor ,you can see this code
my project is unicode

<br />
hfile=::CreateFile(TEXT("c:\\1.txt"),GENERIC_ALL|FILE_ALL_ACCESS,FILE_SHARE_WRITE|\<br />
FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);<br />
HANDLE hmap=::CreateFileMapping(hfile,NULL,PAGE_READWRITE,0,0,NULL);<br />
TCHAR*pmap=(TCHAR*)::MapViewOfFile(hmap,FILE_MAP_ALL_ACCESS,0,0,NULL);<br />
TCHAR*tmp=pmap;<br />
lstrcpy(tmp,TEXT("my test"));<br />
::UnmapViewOfFile(pmap);<br />
::CloseHandle(hmap);<br />
::CloseHandle(hfile);<br />

c:\ 1.txt为我的测试"，我希望它为我的测试"
我该如何实现这个

c:\1.txt is "m y t e s t" ,i want it is "my test"
how do i achieve this

推荐答案

hfile = ::CreateFile(
   TEXT("c:\\1.txt"),
   GENERIC_ALL | FILE_ALL_ACCESS,
   FILE_SHARE_WRITE | FILE_SHARE_READ,
   NULL,
   OPEN_ALWAYS,
   FILE_ATTRIBUTE_NORMAL,
   NULL);
HANDLE hmap = ::CreateFileMapping(
   hfile,
   NULL,
   PAGE_READWRITE,
   0,
   0,
   NULL);
TCHAR *pmap = (TCHAR*)::MapViewOfFile(
   hmap,
   FILE_MAP_ALL_ACCESS,
   0,
   0,
   NULL);
*pmap = (TCHAR)0xFEFF;
TCHAR *tmp = pmap + 1;
lstrcpy(tmp, TEXT("my test"));
::UnmapViewOfFile(pmap);
::CloseHandle(hmap);
::CloseHandle(hfile);

有关 BOM 的更多信息，请单击以下链接: http://www. websina.com/bugzero/kb/unicode-bom.html [ ^ ]

For more informations about BOM you can follow this link: http://www.websina.com/bugzero/kb/unicode-bom.html[^]

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