是的，但我相信这样做不会自动添加所有必需的标头和#defines - 当然，您可以先尝试一下，然后检查为了确定.

Yes, but I believe that doing this won't auto-add all the required headers and #defines - of course, you could try this first, and check to be sure.

如果这不起作用，您可以使用文件->新建->现有代码中的项目"在您的解决方案中创建一个新项目，该项目同时使用 MFC 和 ATL，使用原始项目中的代码.您必须包含当前仅 ATL 版本中的任何自定义设置，但如果您在新项目中创建新的预编译头文件，它应该具有您需要打开并包含的所有 MFC 和 ATL 位.

If that does not work, you could use 'File->New->Project from Existing Code' to create a new project in your solution that uses both MFC and ATL, using the code in your original project. You would have to include any custom settings from your current ATL-only version, but if you let a new precompiled header be created in the new project, it should have all the MFC and ATL bits you need turned on and included.