title: Get the standard context menu for System.Windows.Forms.RichTextBox
body: <p>How can I get the standard context menu in a RichTextBox, like the one in TextBox (Copy, Paste, IME etc.)? I'd go with a P/Invoke solution if nothing is available out of the box. Or do I really have to follow those strange advices to create a custom menu to get a standard menu (<em>sigh</em>)?</p>