判斷目錄是否存在并創(chuàng)建目錄：
    // Test Whether the dir exist
    CString m_dir;
    if (m_dir.Right(1) == “\\”)
    m_dir = m_dir.Left(m_dir.GetLength()-1);
    if (GetFileAttributes(m_dir) == FILE_ATTRIBUTE_DIRECTORY)
    return TURE;
    else
    CreateAllDirectory(m_dir);　　
    // Function CreateAllDirectory
    // recursive function
    void CreateAllDirectory(CString Dir)
    {
    if (Dir.Right(1) == “\\”)
    Dir = Dir.Left(Dir.GetLength()-1);
    if (GetFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
    return;
    else if (GetFileAttributes(Dir) != -1)
    {
    if (DeleteFile(Dir)) // delete the file with the same name
    if (CreateDirectory(Dir, NULL))
    return;
    MessageBox(_T(“Can not create directory for captured pictures”), NULL, MB_OK);
    }
    int n = Dir.ReverseFind(‘\\’);
    CreateAllDirectory(Dir.Left(n));
    if (!CreateDirectory(Dir, NULL))
    MessageBox(_T(“Can not create directory for captured pictures”), NULL, MB_OK);
    }
    考試大提示判斷Dir中某個(gè)文件是否存在,還可以通過FileFind來實(shí)現(xiàn):
    BOOL FileExist(CString strFileName)
    {
    CFileFind fFind;
    return fFind.FindFile(strFileName);
    }