如何知道一个子目录是否存在，如不存在，新建一个？

[chenglf]

如何知道一个子目录是否存在，如不存在，新建一个？

[nne998]

检查干嘛，
直接 mkdir("c:\aaa");
就行了。

[jishiping]

用 FindFirstFile()，然后用CreateDirectory()

[nne998]

更正：是 _mkdir

[LLnju]

直接 CreateDirectory 吧，如果目录存在，CreateDirectory 会失败。

[蝈蝈俊]

if (GetFileAttribute(path) & FILE_ATTRIBUTE_DIRECTORY) //is directory

GetFileAttributes（dir)
如果函数的返回值为0XFFFFFFFF，则表明目录不存在

if(CFile::GetStatus(path,CFileStatus &fs))


PathFileExists
Determines whether a path to a file system object such as a file or directory is valid.

BOOL PathFileExists(
LPCTSTR pszPath
);

Parameters
pszPath
Full path of the object to verify.
Return Values
Returns TRUE if the file exists, or FALSE otherwise. Call GetLastError for extended error information.


Remarks
This function tests the validity of the path. It works only on the local file system or on a remote drive that has been mounted to a drive letter. It will return FALSE for remote file paths that begin with the UNC names \\server or \\server\share. It will also return FALSE if a mounted remote drive is out of service.

Requirements
Version 4.71 and later of Shlwapi.dll

Windows NT/2000: Requires Windows 2000 (or Windows NT 4.0 with Internet Explorer 4.0 or later).
Windows 95/98/Me: Requires Windows 98 (or Windows 95 with Internet Explorer 4.0 or later).
Header: Declared in Shlwapi.h.
Import Library: Shlwapi.lib

[Li_Dinosaur]

Up

[masterz]

MakeSureDirectoryPathExists
The MakeSureDirectoryPathExists function creates all the directories in the specified DirPath, beginning with the root.

BOOL MakeSureDirectoryPathExists(
PCSTR DirPath
);

[captainliyun]

agreen to the LLnju(LLnju)'s view!

如果失败得话，你不处理，系统会忽略得！

[countrynew]

不错