What programming language did you use?
Is it open source?
No.
I'm writing similar application, can you send me source code?
No, sorry. Feel free to ask me what's inside and how does it work, but I spent several hours (or nights :-) tuning all API functions and calls. If you go in the same way, I can advice. But just giving someone a code would result in another 100 questions and without knowledge of some Windows internal stuff the code can not be adapted anyway.
OK. So if you need help with coding, I can add my two cents.
Thanks for such offers. Depends on future development and it depends on user feedback. You can always check wish list and if you have some experience or code that could be used, feel free to let me know (doesn't mean I use the code).
So what's inside? How did you manage "handled = true" problem?
I briefly described basic idea in discussion under this article. But if you keep asking this question, I will probably add more detailed description here :-).