23.替换扩展名
//#include <string>
using std::string;
string s(%%1);
string newExt(%%2);
string::size_type i=s.rfind('.',s.length());
if(i!=string::npos)
s.replace(i+1,newExt.length(),newExt);
CString %%3(s);

24.追加路径
/*
#include <string>
#include <cstdlib>
#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/fstream.hpp>
*/
using namespace std;
using namespace boost::filesystem;
try {
path p1=complete(path(%%2,native),
path(%%1,native));
path p2=system_complete(path(%%2,native));
CString %%3(p3);
}
catch(exception& e){
//e.what();
}

25.移动文件
MoveFile(%%1,%%2);

26.移动一个文件夹下所有文件到另一个目录
//#include <string>
using std::string;
char sep='/';
#ifdef _WIN32
sep='\\';
#endif
CFileFind finder;
BOOL bWorking = finder.FindFile(%%1+"\\*.*");
while (bWorking)
{
bWorking = finder.FindNextFile();
if(!finder.IsDirectory() || finder.IsDots()){
string s(finder.GetFileName());
CString sourcefile(%%1);
if(s.rfind(sep,s.length())!=string::npos)
{
sourcefile=sourcefile+"//"+s.substr(i+1,s.length()-i);
CString targetfile(s.substr(i+1,s.length()-i));
targetfile=%%2+"//"+targetfile/;
MoveFile(sourcefile.GetBuffer(0),targetfile.GetBuffer(0),true);
}
}
}

27.指定目录下搜索文件
CString strFileTitle;
CFileFind finder;
BOOL bWorking = finder.FindFile ("C:\\windows\\sysbkup\\*.cab");
while(bWorking)
{
bWorking=finder.FindNextFile();
strFileTitle=finder.GetFileTitle();
}

28.打开对话框
CFileDialog mFileDlg(TRUE,NULL,NULL,

OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT|OFN_ALLOWMULTISELECT,"All Files (*.*)|*.*||",AfxGetMainWnd());
CString str(" ",10000);
mFileDlg.m_ofn.lpstrFile=str.GetBuffer(10000);
str.ReleaseBuffer();
POSITION mPos=mFileDlg.GetStartPosition();
CString pathName(" ",128);
CFileStatus status;
while(mPos!=NULL)
{
pathName=mFileDlg.GetNextPathName(mPos);
CFile::GetStatus( pathName, status );
}

29.文件分割
CFile m_File;
CString m_Filename,m_FileTitle,m_FilePath;
m_FileName=%%1;
char pBuf[4096];
if(m_File.Open(m_FileName,CFile::modeRead | CFile::shareDenyWrite))
{
m_FileName=m_File.GetPathName();
m_FileTitle=m_File.GetFileTitle();
DWORD FileLength=m_File.GetLength();
DWORD PartLength=FileLength/2+FileLength%2;
int nCount=1;
CString strName;
CFile wrFile;
DWORD ReadBytes;
while(true)
{
ReadBytes=m_File.Read(pBuf,PartLength);
strName.Format("%s%d",m_FIleTitle,nCount);
wrFile.Open(strName,CFile::modeWrite | CFile::modeCreate);
wrFile.Write(pBuf,ReadBytes);
wrFile.Close();
if(ReadBytes<PartLength)
break;
nCount++;
}
m_File.Close();
}
else
AfxMessageBox("不能打开文件");