Rex,
If you are trying to set up copy and paste why not just include the edit menu in your system menu and forget about it. You do have the events, you have mousedown, mouseup, click, doubleclick, rightclick, lostfocus, gotfocus, when, and valid.
But if you want to do all of this you will be writing code in all of those methods to accomplish what the edit menu options do automatically. You only have to make the user highlight what they want, Ctrl+C it, then click the mouse where they want to put it, and Ctrl+V. That's what they do in their word processor, so they already know how.