c++ 遍历目录查找文件

///////////////////////////////////////////////////////////
// Get current dir of exe
char szModuleFileName[MAX_PATH];
//得到exe所在的路径包括exe文件
::GetModuleFileName(NULL, szModuleFileName, MAX_PATH);
char szDrive[256], szDir[MAX_PATH];
//szDrive exe所在盘符，szDir exe所在目录
_splitpath(szModuleFileName, szDrive, szDir, NULL, NULL);

/* format dir for working dir */
char szTempPath[MAX_PATH];
//得到所要查找文件的目录 szDir exe所在目录 "局站停电及发电统计" exe所在目录的子目录
sprintf(szTempPath, "%s%s", szDir, "局站停电及发电统计");
char szSearching[MAX_PATH];
/**********************************************************/
/* 为了保存一个变量 */
_makepath(szSearching, szDrive, szTempPath, NULL, NULL);
CString m_csPluginDir;
m_csPluginDir.Format("%s", szSearching);
//查找的条件是*.xls文件
_makepath(szSearching, szDrive, szTempPath, "*", "xls");

/*
** Search all .dll files, test and load them.
**/
CString csFileName;
WIN32_FIND_DATA wfd;
HANDLE hFindFile = ::FindFirstFile(szSearching, &wfd);
if (hFindFile == INVALID_HANDLE_VALUE) return; // Not any *.dll files
csFileName.Format("%s", wfd.cFileName);
while(! csFileName.IsEmpty())
{

/* find next file */
if (! ::FindNextFile(hFindFile, &wfd) /* &&
GetLastError() == ERROR_NO_MORE_FILES*/)
{
ASSERT(GetLastError() == ERROR_NO_MORE_FILES);
break;
}
else csFileName.Format("%s", wfd.cFileName);
}
::FindClose(hFindFile);