[WiX-users] Uninstalling a component when not used by any products

[Ranganatha H C]

Hi All,

We need to install a MMC (Microsoft Management Console) snap-in on target
machine.. We have several products... So a if MMC is installed by some other
product on a machine we should not try to install it again...

I have wrote the below custom action to install the MMC


<CustomAction Id="InstallMMCSnapIn"
            Directory='DllFolder'  Impersonate='yes'
            
ExeCommand='"[WindowsFolder]Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
/LogToConsole=false
MMCSnapIn.dll'
            Return='check'>
        </CustomAction>

<CustomAction Id="UnInstallMMCSnapIn"
            Directory='DllFolder'  Impersonate='yes'

ExeCommand='"[WindowsFolder]Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
/LogToConsole=false   /u MMCSnapIn.dll'
            Return='check'>
        </CustomAction>

<InstallExecuteSequence >

            <Custom Action ="InstallMMCSnapIn"
After="InstallFinalize"><![CDATA[ NOT Installed ]]></Custom>
            <Custom Action ="UnInstallMMCSnapIn"
Before="RemoveFiles"><![CDATA[Installed]]></Custom>
        </InstallExecuteSequence>


A component has been added to with all the required files, same GUID and set
SharedDllRefCount="yes".

So , the files are installing once once when several products are
installed.. and when a last existing product is installed the files are
getting removed ...
So, How can I apply the same logic to installing MMC snap in....

i.e Custom action InstallMMCSnapIn should run only when a first product is
installed...and Custom Action UnInstallMMCSnapIn should run only when a last
product is u installed from a machine....

Thanks in advance
Ranganatha


-- 
Regards/Ranga
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