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