创建一个“选择文件夹”对话框

1. 在InitInstance里面添加：

HRESULT CoInitializeEx(
  void * pvReserved,        //must be null currently
  DWORD dwCoInit            //see the following definition to COINIT
);
typedef enum tagCOINIT {
    COINIT_MULTITHREADED     = 0x0,
    COINIT_APARTMENTTHREADED = 0x2,
    COINIT_DISABLE_OLE1DDE   = 0x4,
    COINIT_SPEED_OVER_MEMORY = 0x8,
} COINIT;

2.  cpp添加#define _WIN32_DCOM

 

3.函数实现：

BOOL CStyleView::GetFolderPath(CWnd *pWnd, CString &strPath)
{
    TCHAR szTitle[] = _T("请选择对话框");
    TCHAR szPath[MAX_PATH]  = _T("");
    BROWSEINFO bi;
    if (!pWnd)
    {
        return FALSE;
    }
    memset(&bi, 0, sizeof(BROWSEINFO));
    //设置父窗口句柄
    bi.hwndOwner = pWnd->GetSafeHwnd();
    //设置窗口标题
    bi.lpszTitle = szTitle;
    bi.ulFlags = BIF_USENEWUI;
    LPITEMIDLIST pList = SHBrowseForFolder(&bi);
    if (pList)
    {
        if (!SHGetPathFromIDList(pList, szPath))
        {
            return FALSE;
        }
        //防止内存泄露
        IMalloc *pMalloc;
        if (SHGetMalloc(&pMalloc) != NOERROR)
        {
            return FALSE;
        }
        pMalloc->Free(pList);
        if (pMalloc)
        {
            pMalloc->Release();
        }
    }
    //判断路径长度是否有效
    if (_tcslen(szPath) <= 0)
    {
        return FALSE;
    }
    strPath.Format(_T("%s"), szPath);
    return TRUE;
}