MFC中打开一个获取路径的对话框

不废话，上代码

    CString m_FileDir;
    BROWSEINFO bi;
    ZeroMemory(&bi, sizeof(BROWSEINFO));
    bi.hwndOwner = m_hWnd;
    bi.ulFlags   = BIF_RETURNONLYFSDIRS;
    LPITEMIDLIST pidl = SHBrowseForFolder(&bi);
    BOOL bRet = FALSE;
    TCHAR szFolder[MAX_PATH*2];
    szFolder[0] = _T('/0');
    if (pidl)
    {
        if (SHGetPathFromIDList(pidl, szFolder))
            bRet = TRUE;
         IMalloc *pMalloc = NULL;
         if (SUCCEEDED(SHGetMalloc(&pMalloc)) && pMalloc)
        {
            pMalloc->Free(pidl);
             pMalloc->Release();
         }
    }
    m_FileDir = szFolder;//选择的文件夹路径