如何根据wix中的条件设置特征级别?

问题描述：

我正在尝试根据条件安装功能.最初，我将功能级别设置为 1，并在功能内放置一个条件来修改功能级别.

I am trying to install the features based on the condition. Initially i set the feature level to 1 and place a condition inside the feature to modify the feature level.

我无法修改功能级别，并且无论条件如何，它始终设置为 1.

I am unable to modify the feature level and it is always set to 1 only irrespective of condition.

<Feature
        Id = "AddinsFeature"
        Title  = "InstallAddin"
        Level  = "1"
        Absent="allow">
      <ComponentRef Id = "AddInComp"/>
        <Condition Level="0">
          <![CDATA[FALSE]]>
        </Condition>
</Feature>

答

WiX 特征条件的使用方法主要解释如下:https://www.firegiant.com/wix/tutorial/getting-开始/有条件安装/

How to use WiX feature conditions is essentially explained here: https://www.firegiant.com/wix/tutorial/getting-started/conditional-installation/

要将功能设置为您的条件指定的级别，条件必须评估为真.您可以通过将其设置为 1 来强制它为真:

For a feature to be set to the level specified by your condition, the condition has to evaluate to true. You can force it to be true by setting it to 1:

<Feature Id="AddinsFeature" Title="InstallAddin" Level="1" Absent="allow">

  <!-- Force condition to be true, which sets the feature to the Level attribute value -->
  <Condition Level="0">1</Condition>

  <ComponentRef Id = "AddInComp"/>
</Feature>

在上面，我们将功能的安装级别强制为 0，因为它的条件 1 为真(数字 1 在 MSI 逻辑中为真 - 根据定义 - 如布尔值).在现实世界中，情况会复杂得多 - 当然.

Above we force the feature's install level to 0 because its condition of 1 is true (the number 1 is true in MSI logic - by definition - as in boolean). In the real world the condition would be something much more complicated - of course.

每个设置都有一个整体的INSTALLLEVEL - 正如 Chris Painter 在此解释的那样，它充当高水位标记.默认情况下，系统会默认安装评估为低于或等于 INSTALLLEVEL 的功能级别的每个功能.

Every setup has an overall INSTALLLEVEL - and it acts as a high water mark as explained here by Chris Painter. Every feature which evaluates to a feature level below or at the INSTALLLEVEL gets installed by default.

注意:当您在 WiX 源中将 Feature level 设置为 0 时，该功能不会显示在设置中GUI 而它不是将默认安装(更多详细信息在下面的链接中).

Note: When you set the Feature level to 0 in your WiX source, the feature is not show in the setup GUI and it is not going to be installed by default either (more details in link below).

功能操作可能非常复杂.几个链接:

Feature manipulation can be very involved. A few links:

如何根据自定义操作中设置的属性安装功能?
正在安装未选择的功能(顶部详细)
失败条件 wix(Level=0 对 GUI 隐藏功能)
http://www.joyofsetup.com/2008/04/09/feature-states-in-component-conditions/

How to install feature based on the property set in custom action?
Unselected Feature Being Installed (over the top detailed)
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http://www.joyofsetup.com/2008/04/09/feature-states-in-component-conditions/

如何根据wix中的条件设置特征级别?

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