blocks|key|89768|text|WiX模型|type|unstyled|depth|inlineStyleRanges|entityRanges|data|89769|您使用的是什么工具？这里是一个快速的WiX代码片段|offset|length|style|BOLD|89770|Synchronous**，**+deferred+execution+in+system+context**，**+ignore+exit+code，run+on+all+types+of+uninstalls+(也是主要升级卸载)和running+before+the+RemoveFiles+Action|CODE|89771|<CustomAction+Id="RunExeUninstall"+FileKey="notepad.exe"+ExeCommand=""+
++++++++++++++Return="ignore"+Execute="deferred"+Impersonate="no"+/>

<...>

<InstallExecuteSequence>
+++<Custom+Action="RunExeUninstall"+Before="RemoveFiles">REMOVE="ALL"</Custom>
</InstallExecuteSequence>|code-block|syntax|javascript|89772|89773|Orca：当使用Orca查看时，上面的代码应该会在CustomAction+table中产生类似下面这样的结果|89774|89775|+%7C+Action：RunExeUninstall+%7C+Type：3154+%7C+Source：Filename.exe+%7C+Target：%7C|blockquote|89776|89777|89778|89779|一些CA详细信息|89780|通常在执行标准操作RemoveFiles和running+synchronously之前，the+EXE+custom+action+thread需要完成，然后the+setup's+main+thread才能继续(否则主进程可能会在您的EXE+CA中完成之前卸载文件)。|89781|我通常将卸载自定义操作的error+processing设置为ignore+exit+code+(或者回滚可能会出人意料地启动-通过撤消安装将您的安装放回机器上-使安装程序无法卸载，甚至可能无法升级-小的升级应该仍然有效，但大的升级可能会失败)。|89782|此自定义操作是否会对系统进行更改？(而不是仅仅检查或记录一些东西)。然后，它应该在主自定义操作之前的序列中插入相应的rollback+custom+action，，如果手动中止设置，则撤消其更改(当您忽略退出代码时，CA本身不应触发回滚，但用户或检查退出代码的其他CA仍可手动取消设置-或与自定义操作无关的某些运行时故障-磁盘空间不足、光盘错误等...)。|89783|如果您设置了changes+to+per-machine+locations+(对于标准用户不可写)，则需要使用elevated+rights+(deferred+execution+in+system+context)运行。|89784|这里有很多陷阱。请注意，可以通过策略或属性禁用回滚，并将自定义操作提交为从不运行。我将在底部添加一些链接。|89785|89786|一些链接(非常好)：|89787|89788|+(+installsite.org)|unordered-list-item|89789|Windows+Installer+custom+actions:+commit+action+won't+get+executed|89790|Testing+your+deferred+and+rollback+custom+actions|89791|的微星专家Stefan+Krüger|89792|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/windows/desktop/aa368062(v=vs.85).aspx|1|http://installsite.org/|2|https://stackoverflow.com/questions/19631519/windows-installer-custom-actions-commit-action-wont-get-executed/19636158#19636158|3|https://www.joyofsetup.com/2008/06/18/testing-your-deferred-and-rollback-custom-actions/^0|0|0|A|I|7|0|0|D|H|12|1N|G|24|U|3A|11|0|B|H|10|1N|G|24|U|3A|11|0|0|0|0|4|8|4|P|I|P|I|0|0|0|3|6|S|4|14|6|1Q|6|0|0|0|0|0|9|B|L|L|19|S|28|N|9|B|L|L|19|S|28|N|0|C|G|V|G|C|G|V|G|0|1M|M|1M|M|0|6|W|1K|F|6|W|1K|F|21|10|0|0|0|0|4|0|0|3|F|1|0|0|1U|2|0|0|1D|3|0|0^^$0|@$1|2|3|4|5|6|7|22|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|23|8|@$D|24|E|25|F|G]|$D|26|E|27|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|28|8|@$D|29|E|2A|F|G]|$D|2B|E|2C|F|G]|$D|2D|E|2E|F|G]|$D|2F|E|2G|F|G]|$D|2H|E|2I|F|G]|$D|2J|E|2K|F|J]|$D|2L|E|2M|F|J]|$D|2N|E|2O|F|J]|$D|2P|E|2Q|F|J]|$D|2R|E|2S|F|J]]|9|@]|A|$]]|$1|K|3|L|5|M|7|2T|8|@]|9|@]|A|$N|O]]|$1|P|3|-4|5|6|7|2U|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|2V|8|@$D|2W|E|2X|F|G]|$D|2Y|E|2Z|F|J]|$D|30|E|31|F|J]]|9|@$D|32|E|33|1|34]]|A|$]]|$1|S|3|-4|5|6|7|35|8|@]|9|@]|A|$]]|$1|T|3|U|5|V|7|36|8|@$D|37|E|38|F|J]|$D|39|E|3A|F|J]|$D|3B|E|3C|F|J]|$D|3D|E|3E|F|J]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|3F|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|3G|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|3H|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|3I|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|3J|8|@$D|3K|E|3L|F|G]|$D|3M|E|3N|F|G]|$D|3O|E|3P|F|G]|$D|3Q|E|3R|F|G]|$D|3S|E|3T|F|J]|$D|3U|E|3V|F|J]|$D|3W|E|3X|F|J]|$D|3Y|E|3Z|F|J]]|9|@]|A|$]]|$1|13|3|14|5|6|7|40|8|@$D|41|E|42|F|G]|$D|43|E|44|F|G]|$D|45|E|46|F|J]|$D|47|E|48|F|J]]|9|@]|A|$]]|$1|15|3|16|5|6|7|49|8|@$D|4A|E|4B|F|G]|$D|4C|E|4D|F|J]]|9|@]|A|$]]|$1|17|3|18|5|6|7|4E|8|@$D|4F|E|4G|F|G]|$D|4H|E|4I|F|G]|$D|4J|E|4K|F|J]|$D|4L|E|4M|F|J]|$D|4N|E|4O|F|J]]|9|@]|A|$]]|$1|19|3|1A|5|6|7|4P|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|4Q|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|6|7|4R|8|@$D|4S|E|4T|F|G]]|9|@]|A|$]]|$1|1E|3|-4|5|6|7|4U|8|@]|9|@]|A|$]]|$1|1F|3|1G|5|1H|7|4V|8|@]|9|@$D|4W|E|4X|1|4Y]]|A|$]]|$1|1I|3|1J|5|1H|7|4Z|8|@]|9|@$D|50|E|51|1|52]]|A|$]]|$1|1K|3|1L|5|1H|7|53|8|@]|9|@$D|54|E|55|1|56]]|A|$]]|$1|1M|3|1N|5|6|7|57|8|@]|9|@]|A|$]]|$1|1O|3|-4|5|6|7|58|8|@]|9|@]|A|$]]]|1P|$1Q|$5|1R|1S|1T|A|$1U|1V]]|1W|$5|1R|1S|1T|A|$1U|1X]]|1Y|$5|1R|1S|1T|A|$1U|1Z]]|20|$5|1R|1S|1T|A|$1U|21]]]]

<h2>WiX Mock-Up</h2>

What tool do you use? Here is a quick WiX snippet:

<code>Synchronous</code>, <code>deferred execution in system context</code>, <code>ignore exit code</code>, <code>run on all types of uninstalls</code> (also major upgrade uninstalls) and <code>running before the RemoveFiles Action</code>:

<pre class="lang-xml prettyprint-override"><code>&lt;CustomAction Id="RunExeUninstall" FileKey="notepad.exe" ExeCommand="" 
 Return="ignore" Execute="deferred" Impersonate="no" /&gt;

&lt;...&gt;

&lt;InstallExecuteSequence&gt;
 &lt;Custom Action="RunExeUninstall" Before="RemoveFiles"&gt;REMOVE="ALL"&lt;/Custom&gt;
&lt;/InstallExecuteSequence&gt;
</code></pre>

<hr>

Orca: The above should yield something like this in the <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa368062(v=vs.85).aspx" rel="nofollow noreferrer"><code>CustomAction table</code></a> when viewed with <code>Orca</code>:

<blockquote>
 | <code>Action</code>: RunExeUninstall | <code>Type</code>: 3154 | <code>Source</code>: Filename.exe | <code>Target</code>: |
</blockquote>

<hr>

<h2>Some CA Details</h2>

Generally before the standard action <code>RemoveFiles</code> and <code>running synchronously</code> - so that <code>the EXE custom action thread</code> needs to complete before <code>the setup's main thread</code> can continue (or the main tread will likely uninstall the files before you are done in your EXE CA).

I normally set <code>error processing</code> to <code>ignore exit code</code> for uninstall custom actions (or rollback could kick in unexpectedly - putting your install back on the box by undoing the uninstall - making the setup un-uninstallable and possibly un-upgradable as well - minor upgrades should still work, but major upgrades can fail).

Does this custom action make changes to the system? (as opposed to just checking or logging something). Then it should have a corresponding <code>rollback custom action</code>, inserted prior in the sequence to your main custom action, undoing its changes if the setup is aborted manually (when you ignore exit code, the CA itself should not trigger rollback, but the setup can still be cancelled manually by the user, or by other CAs that check exit code - or some runtime failure not related to your custom actions - out of disk space, disc errors, etc...).

If you make <code>changes to per-machine locations</code> (unwriteable for standard users) you need to run with <code>elevated rights</code> (<code>deferred execution in system context</code>).

There are many pitfalls here. Note that rollback can be disabled by policy or property - causing rollback and commit custom actions to never run. I'll add some links at the bottom.

<hr>

Some Links (very good):

<ul>
<li><a href="http://www.installsite.org/pages/en/isnews/200108/" rel="nofollow noreferrer">Installation Phases and In-Script Execution Options for Custom Actions in Windows Installer</a> (MSI-Expert Stefan Krüger of <a href="http://installsite.org" rel="nofollow noreferrer">installsite.org</a>)</li>
<li><a href="https://stackoverflow.com/questions/19631519/windows-installer-custom-actions-commit-action-wont-get-executed/19636158#19636158">Windows Installer custom actions: commit action won&#39;t get executed</a></li>
<li><a href="https://www.joyofsetup.com/2008/06/18/testing-your-deferred-and-rollback-custom-actions/" rel="nofollow noreferrer">Testing your deferred and rollback custom actions</a> </li>
</ul>

Where in the <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa372038%28v=vs.85%29.aspx" rel="nofollow noreferrer">InstallExecuteSequence table sequence</a> should a Custom Action Type 18 (execute an app that is part of the installation) be placed so that it only runs during the uninstall because the <code>"REMOVE="ALL"</code> or an <code>"Installed"</code> condition has been applied to it - so it doesn't get deleted before running?

What Should the Sequence Position be for a Custom Action Type 18 for Uninstalls?

自定义操作类型18 (执行安装中的应用程序)应该放在中的什么位置，以便它只在卸载期间运行，因为"REMOVE="ALL"或"Installed"条件已经应用于它-这样它在运行之前就不会被删除？

问卸载的自定义操作类型18的顺序位置应该是什么？
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问卸载的自定义操作类型18的顺序位置应该是什么？
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