怎样判断某一目录是否存在,如果不存在,则建立该目录.

[yifengchanghong]

怎样判断某一目录是否存在,如果不存在,则建立该目录.

[闻缺陷则喜何志丹]

CreateDirectory("f:\\b",NULL);

[快乐鹦鹉]

程序如下：
CString filePath = "C:\\abc\\";
DWORD dwAttr = GetFileAttributes(filePath);
if(dwAttr==-1||(dwAttr&FILE_ATTRIBUTE_DIRECTORY)==0)//目录不存在
{
if ( !CreateDirectory(filePath, NULL) )
{
AfxMessageBox("不能创建目录");
return;
}
}

[闻缺陷则喜何志丹]

int CDeleteWrongInfoDlg::IsDirectoryOrFile(CString strFileName)
{
strFileName.TrimLeft();
strFileName.TrimRight();

WIN32_FIND_DATA fd;
HANDLE hFind = ::FindFirstFile(strFileName,&fd);
::FindClose(hFind);

//不存在同名的文件或文件夹
if (hFind == INVALID_HANDLE_VALUE)
{
return 0 ;
}
//判断是否为目录
else if (fd.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)
{
return 2 ;
}
else
{
return 1;
}
}

[lixiaosan]

BOOL MakeDirectory(CString dd)
{
HANDLE fFile; // File Handle
WIN32_FIND_DATA fileinfo; // File Information Structure
CStringArray m_arr; // CString Array to hold Directory Structures
BOOL tt; // BOOL used to test if Create Directory was successful
int x1 = 0; // Counter
CString tem = ""; // Temporary CString Object

fFile = FindFirstFile(dd,&fileinfo);

// if the file exists and it is a directory
if(fileinfo.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
{
// Directory Exists close file and return
FindClose(fFile);
return TRUE;
}
m_arr.RemoveAll();

for(x1 = 0; x1 < dd.GetLength(); x1++ ) // Parse the supplied CString Directory String
{
if(dd.GetAt(x1) != '\\') // if the Charachter is not a \
tem += dd.GetAt(x1); // add the character to the Temp String
else
{
m_arr.Add(tem); // if the Character is a \
tem += "\\"; // Now add the \ to the temp string
}
if(x1 == dd.GetLength()-1) // If we reached the end of the String
m_arr.Add(tem);
}

// Close the file
FindClose(fFile);

// Now lets cycle through the String Array and create each directory in turn
for(x1 = 1; x1 < m_arr.GetSize(); x1++)
{
tem = m_arr.GetAt(x1);
tt = CreateDirectory(tem,NULL);

// If the Directory exists it will return a false
if(tt)
SetFileAttributes(tem,FILE_ATTRIBUTE_NORMAL);
// If we were successful we set the attributes to normal
}
// Now lets see if the directory was successfully created
fFile = FindFirstFile(dd,&fileinfo);

m_arr.RemoveAll();
if(fileinfo.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
{
// Directory Exists close file and return
FindClose(fFile);
return TRUE;
}
else
{
// For Some reason the Function Failed Return FALSE
FindClose(fFile);
return FALSE;
}
}

[pomelowu]

每一楼的代码量都在增加，哈哈

[lygfqy]

长了？来个短的
#include <io.h>
.....
char szPathName[MAX_PATH] = "C:\\ABC";
if(_access(szPathName,0) == 0)
MessageBox(NULL,"该文件夹已经存在","提示",0)
else
CreateDirectory(szPathName,NULL);

[tjandy]

楼上的，精简！

[蒋晟]

MakeSureDirectoryPathExists
Windows NT/2000/XP: Included in Windows 2000 and later.
Redistributable: Requires DbgHelp.dll 5.0 or later on Windows NT 4.0 and Windows 95/98/Me.
Header: Declared in Dbghelp.h.
Library: Use Dbghelp.lib.

[ghttzsqgm]

楼上的，更精简！

[qwertasdfg123]

mark

[zhangnanonnet]

CreateDirectory如果目录已经存在就不在重建。。

[owen_2001]

判断是否存在（考虑非法字符的情况）

int IsDirExist(LPCTSTR lpDirPath)
{
CString strPath = lpDirPath;
if (strPath.Find(":\\") == -1)
{
return 2;
}

BOOL bRet;
char szCurrentDiretory[MAX_PATH];
char szNowDir[MAX_PATH];

GetCurrentDirectory(MAX_PATH,szCurrentDiretory);
bRet = SetCurrentDirectory(lpDirPath);
if (!bRet)
{
bRet = CreateDirectory(lpDirPath, NULL);
if (!bRet)
{
DWORD dwError;
dwError = GetLastError();
if ((dwError == 267) || (dwError == 123))
return 2;
else
return 1;
}
else
{
RemoveDirectory(lpDirPath);
return 1;
}
}else{
GetCurrentDirectory(MAX_PATH, szNowDir);
AfxMessageBox(szNowDir);
}

SetCurrentDirectory(szCurrentDiretory);
return 0;
}

创建目录（支持多重创建）
BOOL MakeDir(CString szDirName)
{
HANDLE fFile;
WIN32_FIND_DATA fileinfo;
CStringArray m_arr;
BOOL tt;
int x1 = 0;
CString tem = "";

fFile = FindFirstFile(szDirName, &fileinfo);

if (fileinfo.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
{
FindClose(fFile);
return FALSE;
}
m_arr.RemoveAll();

for(x1 = 0; x1 < szDirName.GetLength(); x1 ++)
{
if (szDirName.GetAt(x1) != '\\')
tem += szDirName.GetAt(x1);
else
{
m_arr.Add(tem);
tem += "\\";
}

if (x1 == szDirName.GetLength() - 1)
m_arr.Add(tem);
}
FindClose(fFile);

for (x1 = 1; x1 < m_arr.GetSize(); x1++)
{
tem = m_arr.GetAt(x1);
tt = CreateDirectory(tem, NULL);
if (tt)
SetFileAttributes(tem, FILE_ATTRIBUTE_NORMAL);
}

fFile = FindFirstFile(szDirName, &fileinfo);
m_arr.RemoveAll();
if (fileinfo.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
{
FindClose(fFile);
return TRUE;
}
else
{
FindClose(fFile);
return FALSE;
}
}

[Pipi0714]

_access();判断是否存在
mkdir(); 创建

[yjje]

#include <io.h>

CString filepathname="e:\\aaa";
if(_access(filepathname,0)==0) MessageBox("文件夹存在.")
else
CreateDirectory(filepathname,NULL);

这样很不错.

[GreateBear]

收藏一下

[dlscdn]

mark

[stevenW]

mark

[xdsh00]

收藏

[wy5622]

mark

[honorwinner]

还没有揭贴呢？！楼主，我都从一个裤衩混到两个了，这帖子竟然还被顶出来了，

弓虽！