How to wrap an activex dll in an activex exe?

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I have an ActiveX dll which is 32bit. I have a C# user control project which wraps the ActiveX dll for use in a WPF application. Now the problem is we want to change the application to 64bit. We created a 64bit building target, but we were unable to use the ActiveX dll because it is 32bit. I am considering wrapping the ActiveX dll in an ActiveX exe (out-proc COM), and reference the ActiveX exe in my C# user control. Could somebody provide some guide/walkthrough for wrapping an ActiveX dll in an ActiveX exe? Thanks.

Posted 14-Jul-11 10:48am

Raptor81

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Philippe Mori · Answer 1 · 2011-07-14T13:32:00

See http://stackoverflow.com/questions/2152449/32-bit-activex-control-in-a-64-bit-net-app[^]

Or also http://support.microsoft.com/kb/896457[^]

The easy answer is that you cannot do that. A 64 application can only host 64 bit control. A 32 bit application can only host 32 bit controls.

So you have the following possibilities:

Force your application to be 32 bit
Ask for a 64 bit version of your ActiveX control
Replace your control by something else (ideally a .NET component)
Do not offer that feature in your 64 bit version
Start a 32 bit application with a windows with your control (and loose integration)
Keep the whole UI (user interface) 32 bit and have inter-communication with your 64 bit application (service) with does not have any interface
...

By the way if you try to use you ActiveX control anyway... It will probably take a lot of time to make it works and it will probably never works as desired... If it would have been easy, then Microsoft would have support it.