Links this combo-box with an editor.
property Editor: TCustomRVControl;
Controls of the following types can be assigned to this property:
•TRichViewEdit
•TDBRichViewEdit
•TSRichViewEdit (ScaleRichView)
•TDBSRichViewEdit (ScaleRichView)
When the combo-box is linked with Editor:
•the combo-box is updated automatically according to changes in Editor
•the combo-box applies the user choice to the selected fragment in Editor