MFC 如何创建浏览文件夹的对话框

如何创建浏览文件夹的对话框 

如何创建浏览文件夹的对话框    
CString CXXXXDlg::GetOpenfolderPath()
{
    BROWSEINFO bi;  
    ZeroMemory(&bi,sizeof(BROWSEINFO));
    bi.ulFlags = 0x0040 | BIF_EDITBOX;
    LPMALLOC pMalloc;    
    LPITEMIDLIST pidl = SHBrowseForFolder(&bi);
    CString strFolderPath = "";
    char savepath[MAX_PATH];
    memset(savepath,0,sizeof(savepath));
    if(pidl != NULL){
        SHGetPathFromIDList(pidl,savepath);
        strFolderPath.Format(_T("%s"), savepath);
        f (SUCCEEDED(SHGetMalloc(&pMalloc))) { 
            pMalloc->Free(pidl);
            pMalloc->Release();
        }   
    }
   return strFolderPath;
}