Windows 在哪里存储其“打开方式”设置？
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Where does Windows store its "Open With" settings?
提问by mitch
I'm trying to programmatically check file associations by the file extension (for example .jnlpfiles). I keep reading that
我正在尝试通过文件扩展名（例如.jnlp文件）以编程方式检查文件关联。我一直在读那个
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JNLPFile\Shell\Open\Command
is the Registry key to check. However, if you change the association through Windows Explorer:
是要检查的注册表项。但是，如果您通过 Windows 资源管理器更改关联：
Open With > Choose Program > (Always use the selected program)
打开方式>选择程序>（始终使用所选程序）
the change isn't at all reflected in this Registry key. Where else is this information stored?
更改根本没有反映在此注册表项中。这些信息还存储在哪里？
采纳答案by Michael Goldshteyn
Take a look in:
进去看看：
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
and the sub-key of that is the extension you reassigned. Under that there will be the UserChoice and OpenWithList sub-keys which will contain your redefinition.
其子键是您重新分配的扩展名。在此之下将有 UserChoice 和 OpenWithList 子键，其中将包含您的重新定义。
You may also want to read http://support.microsoft.com/kb/950505which talks about your issue.
您可能还想阅读讨论您的问题的http://support.microsoft.com/kb/950505。
回答by Chris Judge
This is a two-part look-up.
这是一个两部分的查找。
First, you look up the default value of HKEY_CLASSES_ROOT\[file_extension]. For your extensions, .jnlp, the value is "JNLPFile". Let's call this the [file_descriptor].
首先，查找 HKEY_CLASSES_ROOT\[file_extension] 的默认值。对于您的扩展名 .jnlp，值为“JNLPFile”。我们称之为 [file_descriptor]。
Now you can look up the default value of HKEY_CLASSES_ROOT\[file_descriptor]\Shell\[action]\command (where [action] is the shell action you are interested in, e.g.: Open, Print, Edit, etc.).
现在您可以查找 HKEY_CLASSES_ROOT\[file_descriptor]\Shell\[action]\command 的默认值（其中 [action] 是您感兴趣的 shell 操作，例如：打开、打印、编辑等）。
回答by Ruel
On:
在：
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.jnlp\OpenWithList
Tip: Edit>Find is pretty handy at these situations. :)
提示：编辑>查找在这些情况下非常方便。:)
