大家好，又见面了，我是你们的朋友全栈君。
今天编写一个局域网文件拷贝的demo 。其中有一个 SHFileOperation 的用法，这个函数有个参数SHFILEOPSTRUCT。查看msdn有如下解释：
Each file name must be terminated by a single NULL character. An additional NULL character must be appended to the end of the final name to indicate the end of pFrom.pToAddress of a buffer to contain the name of the destination file or directory. This parameter must be set to NULL if it is not used. Like pFrom, the pTo member is also a double-null terminated string and is handled in much the same way. However, pTo must meet the following specifications.
Wildcard characters are not supported.
Copy and Move operations can specify destination directories that do not exist and the system will attempt to create them. The system normally displays a dialog box to ask the user if they want to create the new directory. To suppress this dialog box and have the directories created silently, set the FOF_NOCONFIRMMKDIR flag in fFlags.
For Copy and Move operations, the buffer can contain multiple destination file names if the fFlags member specifies FOF_MULTIDESTFILES.
Pack multiple names into the string in the same way as for pFrom.
Use only fully-qualified paths. Using relative paths will have unpredictable results.
明白否，不明白看在线msdn的解释
pFrom
Type: LPCTSTR
Note This string must be double-null terminated.
A pointer to one or more source file names. These names should be fully-qualified paths to prevent unexpected results.
Standard MS-DOS wildcard characters, such as “*”, are permitted only in the file-name position. Using a wildcard character elsewhere in the string will lead to unpredictable results.
Although this member is declared as a single null-terminated string, it is actually a buffer that can hold multiple null-delimited file names. Each file name is terminated by a single NULL character. The last file name is terminated with a double NULL character (“\0\0”) to indicate the end of the buffer.
pTo
Type: LPCTSTR
Note This string must be double-null terminated.
A pointer to the destination file or directory name. This parameter must be set to NULL if it is not used. Wildcard characters are not allowed. Their use will lead to unpredictable results.
Like pFrom, the pTo member is also a double-null terminated string and is handled in much the same way. However, pTo must meet the following specifications:
- Wildcard characters are not supported.
- Copy and Move operations can specify destination directories that do not exist. In those cases, the system attempts to create them and normally displays a dialog box to ask the user if they want to create the new directory. To suppress this dialog box and have the directories created silently, set the FOF_NOCONFIRMMKDIR flag in fFlags.
- For Copy and Move operations, the buffer can contain multiple destination file names if the fFlags member specifies FOF_MULTIDESTFILES.
- Pack multiple names into the pTo string in the same way as for pFrom.
- Use fully-qualified paths. Using relative paths is not prohibited, but can have unpredictable results.
这样写就行
string strSrc(“F:\\tools\\WINXPSP3.GHO”);
strSrc += ‘\0’;
string strDesc(“\\\\192.168.1.11\\test“);
strDesc += ‘\0’;
CopyFolder( strSrc, strDesc );
这样写就不行CopyFolder( std::string(“D:\\2.txt\0”), std::string(“e:\\3.txt\0”) );
饿的那个神啊。记住了这很挫的方式。
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