I have two applications written, one working as x86 (written in vb6) and another as x64 (written in VB.Net). What would be the easiest and most elegant way to establish communication between them, so that they can share some data and calls between them. For instance, app A sends some data (a number, string, array…) and the app B as soon it receive it, respond to it, and vice versa.
And by elegant, I mean I don’t want to use for instance a shared disk file or a database, and the method should be reasonably fast (e.g. if the method can send a short string in a millisecond, or perform a thousand sending in a second, it would be enough).
Something as a shared dll, (or maybe ActiveX exe) would be fine, but I believe it is not viable, as they cannot be shared: x64 can communicate only with x64 libraries and x86 only with x86?
Right now I’m using SendMessage to send messages to a dedicated TextBox controls on a hidden form in respective applications, but I consider it inelegant, cumbersome, not very configurable, although reasonably fast.
So, is there a better and smarter way to do it?