ShortCut Keys Event
How I do for get Shortcut keys event inside form?
CTRL + C.
You need to use Menu events to capture such shortcut keys. For example, Ctrl+C corresponds to Menu UID 772. You can capture this event by listening to et_MENU_CLICK event and checking its Menu UID.
I would also suggest looking at Events Logger tool (part of B1DE) which gives you a comprehensive view of all events raised when an action is performed in Business One.