Inno Setup:如何自动卸载以前安装的版本? [英] Inno Setup: How to automatically uninstall previous installed version?

问题描述

我正在使用Inno Setup创建安装程序.

I'm using Inno Setup to create an installer.

我希望安装程序自动卸载以前安装的版本，而不是覆盖它.我该怎么办?

I want the installer to automatically uninstall the previous installed version, instead of overwriting it. How can I do that?

推荐答案

给定AppId(即您在[Setup]部分中用于AppID的值)，您应该能够从注册表中读取卸载字符串. ).可以在Software\Microsoft\Windows\CurrentVersion\Uninstall\{AppId}\下找到(可以是HKLM或HKCU，因此最好同时检查两者)，其中{AppId}应该替换为您使用的实际值.查找UninstallString或QuietUninstallString值，然后使用Exec函数从InitializeSetup()事件函数运行它.

You should be able to read the uninstall string from the registry, given the AppId (i.e. the value you used for AppID in the [Setup]-section). It could be found under Software\Microsoft\Windows\CurrentVersion\Uninstall\{AppId}\ (could be either HKLM or HKCU, so best check both) where {AppId} should be substituted with the actual value you used. Look for the UninstallString or QuietUninstallString values and use the Exec function to run it from your InitializeSetup() event function.

更新:使用带有{uninstallexe}的[Run]部分条目删除了无效的替代解决方案-感谢所有评论者指出了这一点！

Update: removed non-working alternative solution using a [Run]-section entry with {uninstallexe} - thanks to all commenters who pointed this out!

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