Re: [2005] Override WndProc
I'm not sure whether that theory will hold or not, but you need to override the RTB's WndProc method if it's to have a chance. That means defining your own class that inherits RichTextBox, overriding WndProc, then placing an instance of that class on your form instead of a regular RTB.
Re: [2005] Override WndProc
Sounds good, but how would I do that? I have no idea how to create classes that inherit user controls.
Re: [2005] Override WndProc
There are no UserControls involved. You inherit the RichTextBox class the same way you inherit any other class. You declare a class and you add an Inherits line.