MFC 文件夹选择对话框

Posted 2020-07-28 平楚荒烟

CString setSavePath()
{
    CString strPath = _T("");
    HRESULT hr;
    LPITEMIDLIST pItemList;
    BROWSEINFO browseinfo;
    TCHAR path[MAX_PATH];
    hr = ::CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
    if (FAILED(hr)) {
        TRACE("CoInitEx failed: %x\n", hr);
        return strPath;
    }

    IMalloc *pMalloc = NULL;
    hr = SHGetMalloc(&pMalloc);
    if (FAILED(hr)) {
        TRACE("Can‘t retrieve system‘s IMalloc interface: %x\n", hr);
        return strPath;
    }
    ENSURE(pMalloc);

    memset(&browseinfo, 0, sizeof(BROWSEINFO));
    CString strCaption;
    browseinfo.hwndOwner = GetSafeHwnd();
    browseinfo.pszDisplayName = path;
    browseinfo.ulFlags = BIF_NEWDIALOGSTYLE | BIF_RETURNONLYFSDIRS;
    strCaption.LoadString(IDS_SAVEPATH_CONFIG);
    browseinfo.lpszTitle = strCaption;

    pItemList = ::SHBrowseForFolder(&browseinfo);
    if (pItemList) {
        // Behold the elegance of CStrBuf!
        ::SHGetPathFromIDList(pItemList, CStrBuf(strPath, MAX_PATH));
        pMalloc->Free(pItemList);
        UpdateData(FALSE);
    }
    pMalloc->Release();
    pMalloc = NULL;
    ::CoUninitialize();

    return strPath;
}