Programatically sending Ctrl-C to a COM server

I have a function, called from C#/.NET which can take an unacceptable amount of time to complete (more than 1 hour). I would like to interrupt MATLAB in situations like this, and it was suggested that I use GenerateConsoleCtrlEvent to accomplish this (documented here ). That function is in C++, but I've written a simple wrapper around a DLL that calls it successfully from within C#, but there's a problem. I don't have a good way of getting or setting the process group for the COM server at creation, which, as far as I can tell is the only way of accomplishing it. The process group itself isn't particularly well documented. Any suggestions?