Please read the entire thread two or three times before posting, as it is clear you have no understanding of my intent behind asking Khaled that series of questions. I asked Khaled, not you. Your answer on behalf of Khaled was a contradiction and agreed entirely with my point.
For example, pressing ctrl+b in an edit box would usually do nothing, but in mIRC it inserts a bold control code.
You seem to be trying to challenge him over nothing. You've got your answer, no?
Exactly, so why not override default behaviour for MDI client windows, and ensure that the behaviour will be ideal?