存储具有所有用户的读/写权限的应用程序数据的最佳目录？

Question

Until Windows Vista I saved my application data into the directory where the program was located. The most common place was "C:\\Program Files\\MyApplication". As we know, under Vista and later the common user does't have rights to write under "Program Files" folder. So my first idea was to save the application data under the "All Users\\Application Data" folder. But it seems that this folder has writing restrictions too!

So to sum up, my requirements are:

• The folder should exist under Windows XP and above.
• All users of the system should have read\\write\\creation rights to this folder and its subfolders and files.
• I want to have only one copy of file\\files for all users.

Answer 1

It's often good to use environment variables so you keep things more generic.

Vista has changed some things, with NTFS Junction Points. See http://www.svrops.com/svrops/articles/jpoints.htm

Anyway, using %appdata% should automagically put files in the proper place on xp/vista/7

Answer 2

There is no such location. Even on Windows XP (and probably 2000 as well) no such location ever existed; we just think it did because we all ran with administrative privileges. It is not until Vista forces us to run as limited user that we realize our incorrect assumptions. You're going to have to explicitly set the permissions on your directory.

Answer 3

我将创建一个像所有用户\\应用程序数据\\ YourAppName \\ Shared这样的子文件夹，以便明确该文件夹将包含所有用户可写的文件，并在安装程序中设置权限。