If you are using inline code, you can add this in the top of your control:
<%@ Import Namespace="mojoPortal.Web.Editor" %>
also in oninit or in page load you need to call
SiteUtils.SetupEditor(edContent); //where edContent in this example is the id of the editor
You also should specify which toolbar
edContent.WebEditor.ToolBar = ToolBar.FullWithTemplates;
Hope it helps,
Joe