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,,sizeof(savepath));

    if(pidl != NULL){

        SHGetPathFromIDList(pidl,savepath);

        strFolderPath.Format(_T("%s"), savepath);

        f (SUCCEEDED(SHGetMalloc(&pMalloc))) {

            pMalloc->Free(pidl);

            pMalloc->Release();

        }

    }

   return strFolderPath;

}