在MFC中如何获取文件和文件夹的路径

在VC++编程中，获取文件的路径很容易通过CFileDialog来实现，代码示例如下：

	CFileDialog dlg(
		TRUE,"*.csv",NULL,
		OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST|OFN_HIDEREADONLY,
		"csv files(*.csv)|*.csv|All Files(*.*)|*.*||",NULL
		);
	dlg.m_ofn.lpstrTitle = "Open Arousal File";  //the title of the openfile dailog
	if(dlg.DoModal()!= IDOK)   //if don't get the arousal file
		return;
	arousalPath = dlg.GetPathName();  //get the arousal address
	UpdateData(FALSE);

通过上面的代码就可以获得一个文件的绝对路径，但有时我们需要获得文件夹的路径以便后续的操作，相对来说，获取文件夹的路径要复杂一点。代码如下：

	TCHAR szPath[_MAX_PATH];
	BROWSEINFO bi;
	bi.hwndOwner = GetSafeHwnd();
	bi.pidlRoot = NULL;
	bi.lpszTitle = "Please select the input path";
	bi.pszDisplayName = szPath;
	bi.ulFlags = BIF_RETURNONLYFSDIRS;
	bi.lpfn = NULL;
	bi.lParam = NULL;

	LPITEMIDLIST pItemIDList = SHBrowseForFolder(&bi);

	if(pItemIDList)
	{
		if(SHGetPathFromIDList(pItemIDList,szPath))
		{
			InputPath = szPath;
			//videoPath = inputImgPath;
		}

		//use IMalloc interface for avoiding memory leak
		IMalloc* pMalloc;
		if( SHGetMalloc(&pMalloc) != NOERROR )
		{
			TRACE(_T("Can't get the IMalloc interface\n"));
		}

		pMalloc->Free(pItemIDList);
		if(pMalloc)
			pMalloc->Release();
		UpdateData(FALSE);
	}
	else 
		InputPath = "";