根据条件在WiX中设置属性 [英] Set a property in WiX based on a condition

问题描述

这应该很简单，但是几个小时后，我空白了。 ;（

This should be easy, but after several hours I’m coming up blank. ;(

我进行注册表搜索（实际上是两个），因为我需要检查两个先前安装的 ，然后安装新的文件到找到的先前安装的位置。

I do a registry search (actually two), because I need to check for either of two previous installs and then install my new files to the location of the prior install that was found.

• 这些先前安装中只有一个实际上存在

• Only one of these prior installs will actually exist.

然后我需要将新文件安装到找到 PROD＃的 InstallLocation。

I then need to install my new files to the 'InstallLocation' of which 'PROD#' was found.

<!—  Look for the UnInstall key of the 1st possible product  -->
<!—  GUID = {E928E024-DEFE-41A7-8469-D338212C4943}           -->
<Property Id='PROD1'>
    <RegistrySearch Id='PROD_REG1'
                    Type='raw'
                    Root='HKLM'
                    Key='$(var.REGKEY_PROD1)'
                    Name='InstallLocation' />
</Property>

<!—  Look for the UnInstall key of the 2nd possible product  -->
<!—  GUID = {A40A9018-DB9D-4588-A591-F012600C6300}           -->
<Property Id='PROD2'>
  <RegistrySearch Id='PROD_REG2'
                  Type='raw'
                  Root='HKLM'
                  Key='$(var.REGKEY_PROD2)'
                  Name='InstallLocation' />
    </Property>

<!--  How do I set INSTALL_HERE Property to whichever ‘InstallLocation’ was found?  -->

<!--  Define the directory structure  -->
<Directory Id="TARGETDIR" Name="SourceDir">
    <Directory Id="INSTALL_HERE">
        <Directory Id="MAIN_DIRECTORY" Name="MyProduct"/>
        <Directory Id="HELP_DIRECTORY" Name="Help"/>
    </Directory>
</Directory>

推荐答案

以下内容将为结果设置属性A和B两个不同的注册表搜索。如果对B的搜索成功，它将用B的值覆盖A的值。

The following will set properties A and B to the result of two different registry searches. If the search for B was successfull, it overrides the value of A with the value of B.

  <Property Id="A">
     <!-- registry search 1 here -->
  </Property>

  <Property Id="B">
     <!-- registry search 2 here -->
  </Property>

  <SetProperty Id="A" After="AppSearch" Value="[B]">
     B
  </SetProperty>

请注意 SetProperty 元素两次使用B的值：一次作为 Value = [B] 覆盖值A，一次作为自定义操作的条件文本。 After = AppSearch 确保在注册表搜索后立即执行自定义操作。

Note how the SetProperty element uses the value of B twice: once as Value="[B]" to override the value of A, and once as the condition text of the custom action. The After="AppSearch" ensures that the custom action is executed right after the registry searches.

另请参见< a href = https://stackoverflow.com/questions/1215320/set-wix-property-only-if-certain-condition-is-met/1215855#1215855> Rob Mensching的答案

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