我的程序应该安装到注册表中记录的路径上。如果未找到注册表项,则安装到另一个(默认)路径。
例如,我想要这样的东西:
<Property Id="MYINSTALLDIR">
<RegistrySearch Id='MyRegistry' Type='raw' Root='HKCU' Key='SoftwareMyAppFoo' Name='InstallDir' />
if not found, then set "MYINSTALLDIR" to "D:workingdefaultApps"
</Property>
我应该如何编写我的 wxs 文件来实现这一点?
编辑:
现在的问题是:
if not found in registry, then set "MYINSTALLDIR" to LocalAppDataFolder
我试过了
<Property Id="MYINSTALLDIR" Value="LocalAppDataFolder">
<RegistrySearch Id='MyRegistry' Type='raw' Root='HKCU' Key='SoftwareMyAppFoo' Name='InstallDir' />
</Property>
但返回错误:
Error 1606. Could not access network location LocalAppDataFolder.
好的,我终于想出了该怎么做。
使用 Custom Action
,现在可以将默认值设置为另一个属性:
<Property Id="MYINSTALLDIR">
<RegistrySearch Id='MyRegistry' Type='raw' Root='HKCU' Key='SoftwareMyAppFoo' Name='InstallDir' />
</Property>
<CustomAction Id="UserInstallDir" Property="InstallDir" Value="[INSTALLDIRCU]" Execute="immediate" />
<CustomAction Id="UserInstallDirDefault" Property="InstallDir" Value="[LocalAppDataFolder]" Execute="immediate" />
<InstallExecuteSequence>
<Custom Action="UserInstallDir" After="AppSearch">MYINSTALLDIR</Custom>
<Custom Action="UserInstallDirDefault" After="AppSearch">NOT MYINSTALLDIR</Custom>
</InstallExecuteSequence>
从内存中,下面的示例应该可以工作。如果未找到搜索的值,则该属性将获取默认值。仅当搜索成功时,才会覆盖它。
<Property Id="MYINSTALLDIR" Value="Default Property Value">
<RegistrySearch Id='MyRegistry' Type='raw' Root='HKCU' Key='SoftwareMyAppFoo' Name='InstallDir' />
</Property>