Is it possible to access a 64-bit dll from a 32-bit application?

Question

I have a Delphi application similar to Taskbar Shuffle that includes a hook dll.

EDIT: This hook DLL communicates with the main app by sending windo

Answer 1

No, but you might be able to get around that using COM. If you run the dll inside a COM object which is running as a stand-alone process, and communicate with marshallable interfaces (eg: automation-compatible interfaces), it should work. It's not always feasible, depending on what the dll does and how extensive the integration and call surfaces are, but it is an option which should be able to make that scenario possible.