FindFirstFile和FindNextFile

#include <windows.h>
#include <stdio.h>

#define MAC_FILENAMELENOPATH 256

void FindFileInDir(char* rootDir, char* strRet)//第一个参数是输入的目录名，第二个参数是存放所有文件的缓冲
{

    char fname[MAC_FILENAMELENOPATH];
    ZeroMemory(fname, MAC_FILENAMELENOPATH);

    WIN32_FIND_DATA fd;
    ZeroMemory(&fd, sizeof(WIN32_FIND_DATA));

    HANDLE hSearch;
    char filePathName[256];
    char tmpPath[256];
    ZeroMemory(filePathName, 256);
    ZeroMemory(tmpPath, 256);

    strcpy(filePathName, rootDir);
    BOOL bSearchFinished = FALSE;
    if( filePathName[strlen(filePathName) -1] != '\\' )
    {
       strcat(filePathName, "\\");//自动在输入的文件目录下面加上“\”
    }
    strcat(filePathName, "*");//当前目录的全部子目录和文件
    hSearch = FindFirstFile(filePathName, &fd);
    //Is directory
    if( (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
       && strcmp(fd.cFileName, ".") && strcmp(fd.cFileName, "..") ) //.表示当前目录，..表示上一级目录  
    {
       strcpy(tmpPath, rootDir);
       strcat(tmpPath, fd.cFileName);
       FindFileInDir(tmpPath, strRet);
    }
    else   if( strcmp(fd.cFileName, ".") && strcmp(fd.cFileName, "..") )
    {
                  sprintf(fname, "%s\n", fd.cFileName);
                  strcat(strRet + strlen(strRet) , fname);//这个地方和网上的有差别
      }

    while( !bSearchFinished )
    {
       if( FindNextFile(hSearch, &fd) )
       {
           if( (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
              && strcmp(fd.cFileName, ".") && strcmp(fd.cFileName, "..") )     
           {
              strcpy(tmpPath, rootDir);
              strcat(tmpPath, "\\");//这个地方网上的程序都没有写，会造成错误
              strcat(tmpPath, fd.cFileName);
              FindFileInDir(tmpPath, strRet);
           }
           else   if( strcmp(fd.cFileName, ".") && strcmp(fd.cFileName, "..") )
           {
                    sprintf(fname, "%s\n", fd.cFileName);
                    strcat(strRet + strlen(strRet), fname);//这个地方和网上的也有差别
            }

       }
       else
       {
           if( GetLastError() == ERROR_NO_MORE_FILES )          //Normal Finished
           {
              bSearchFinished = TRUE;
           }
           else
              bSearchFinished = TRUE;     //Terminate Search
       }
    }
    FindClose(hSearch);
    }
void main()//用于测试的主程序
{
char rootDir[100]={0};
char strRet[99999]={0};
strcpy(rootDir,"C:\\wince300");
FindFileInDir( rootDir, strRet);
printf("%s",strRet);
}