So I had a veer and I had to patch for rejecting calls when screen is locked. I got a Pre 3 now and I was wondering why there isn't a patch for that and started to look into phone application codes.

In case you didn't noticed, one push on power button silences the phone (even if it is muted), second push on power button rejects call. Just saying maybe some of us didn't noticed, I didn't notice because I didn't try it.