[Tuna-Fish]

You can basically read anything from controls, and trigger callbacks at will, as if you had actually clicked a button or written some text. This means that you can write "expect-like" software -- just start up the program, and have another program read input from it's text fields and issue commands to it.

I have actually done a lot of this, putting old sourceless win32 and win16 programs run in the background on virtual machines on the server and building new web-based interfaces on top of them.