Have you taken a look at the documentation on registering preview
handlers? http://msdn.microsoft.com/en-us/library/cc144144(VS.85).aspx
explains pretty much everything in detail.
Here's some sample code for installing a 32-bit native code handler on
both 32 and 64-bit systems, hope this helps.
<Fragment>
<Component Id="MyPreviewHandler.dll"
Directory="APPLICATIONFOLDER" Guid="*">
<File Id="MyPreviewHandler.dll" KeyPath="yes"
Source="SourceDir\MyPreviewHandler.dll" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\AcmeXYZ.Document\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}"
Value="{XXX-XXX-XXX-XXX}" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Microsoft\Windows\CurrentVersion\PreviewHandlers"
Name="{XXX-XXX-XXX-XXX}" Value="XYZ Preview Handler" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}" Value="XYZ Preview
Handler" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}" Name="DisplayName"
Value="XYZ Preview Handler" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}"
Name="DisableLowILProcessIsolation" Value="1" Type="integer" />
<!-- 32-bit handler needs to use different AppID on
x64, refer
http://msdn.microsoft.com/en-us/library/cc144144(VS.85).aspx -->
<?if $(var.ProcessorArchitecture)=x64 ?>
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}" Name="AppID"
Value="{534A1E02-D58F-44f0-B58B-36CBED287C7C}" Type="string" />
<?else?>
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}" Name="AppID"
Value="{6d2b5079-2f0b-48dd-ab7f-97cec514d30b}" Type="string" />
<?endif?>
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}\InprocServer32"
Value="[!MyPreviewHandler.dll]" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}\InprocServer32"
Name="ThreadingModel" Value="Apartment" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}\InprocServer32"
Name="ProgID" Value="AcmeXYZ.Document" Type="string" />
<!-- Only install for Vista+ -->
<Condition><![CDATA[VersionNT >= 600]]></Condition>
</Component>
</Fragment>
<Fragment>
<!-- 64-bit preview handler voodoo *waves hands magically* -->
<Component Id="MyPreviewHandler_x64" Directory="XYZCommonFiles"
Guid="*" Win64="yes">
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}" Value="XYZ Preview
Handler" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}" Name="DisplayName"
Value="!(loc.ApplicationName)" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}"
Name="DisableLowILProcessIsolation" Value="1" Type="integer" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}\InprocServer32"
Value="[!MyPreviewHandler.dll]" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}\InprocServer32"
Name="ThreadingModel" Value="Apartment" Type="string" />
<RegistryValue Root="HKLM"
Key="SOFTWARE\Classes\CLSID\{XXX-XXX-XXX-XXX}\InprocServer32"
Name="ProgID" Value="AcmeXYZ.Document" Type="string" />
<!-- Only install for Vista+ -->
<Condition><![CDATA[VersionNT >= 600]]></Condition>
</Component>
</Fragment>
On Fri, Jul 16, 2010 at 2:23 AM, Daniel Moody <dani...@gibbscam.com> wrote:
> Hello,
>
> I'm trying to register a Preview Pane handler for our product's files using
> Wix. Unfortunately, Heat is unable to harvest anything from the preview
> handler .dll file. Iit gives a HEAT5151 error and reports "Exception has
> been thrown by the target of an invocation." I've tried using the
> before-and-after registry snapshot approach, which has given me a large
> number of registry keys and values, which oddly work fine on most computers
> but not at all on a few.
>
> My installer is "GACing" the .dll just fine, and if I run regasm from a
> command line after my installer is finished, everything works as expected.
>
> As I've just had the installer project transferred to me recently, I often
> reference our old InstallShield installer to see what my predecessor did,
> but in this case he used a binary custom action to manually run regasm,
> something that I intend to avoid at all costs.
>
> Thanks,
>
> Daniel Moody | QA Engineer | Gibbs and Associates
>
>
>
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