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1.打开目录对话框

void CMFCApplication7Dlg::OnBnClickedButton1(){	TCHAR szPath[MAX_PATH] = { 0 };	BROWSEINFO mBroInfo = { 0 };	mBroInfo.hwndOwner = m_hWnd;		ITEMIDLIST *pidl = SHBrowseForFolder(&mBroInfo);//打开文件目录对话框	if (SHGetPathFromIDList(pidl, szPath));	{		SetDlgItemText(IDC_EDIT_PATH, szPath);	}	CoTaskMemFree(pidl);		// TODO: 在此添加控件通知处理程序代码}

2.目录选择对话框的根目录设定

mBroInfo.pidlRoot = GetItemIdListFromPath(_T("D:\\"));LPITEMIDLIST GetItemIdListFromPath(CString strPath){	if (!strPath)	{		return NULL;	}	LPSHELLFOLDER pDesktopFolder = NULL;	HRESULT hr = SHGetDesktopFolder(&pDesktopFolder);	if (FAILED(hr))	{		return NULL;	}	PWCHAR pWchar = NULL;#ifdef _UNICODE	pWchar = (LPTSTR)(LPCTSTR)strPath;#else	USES_CONVERSION;	pWchar = A2W(strPath);//转换成宽字节#endif	LPITEMIDLIST pItemIdList = NULL;	hr = pDesktopFolder->ParseDisplayName(NULL, NULL, pWchar, NULL, &pItemIdList, NULL);	pDesktopFolder->Release();	if (FAILED(hr))	{		return NULL;	}	return pItemIdList;}

3.拖拽功能

1.对话框模板的Accept Files属性设置为True；2.响应主对话框类的WM_DROPFILES消息；3.添加如下程序：TCHAR szPath[MAX_PATH] = { 0 };	UINT nCount = DragQueryFile(hDropInfo,0xFFFFFFFF,NULL,0);	for (UINT idx = 0; idx < nCount; idx++)	{		DragQueryFile(hDropInfo, idx, szPath, MAX_PATH);		MessageBox(szPath);	}	DragFinish(hDropInfo);

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