Sets or gets a value that indicates whether the document can be edited.
HRESULT value = object.put_designMode( v);HRESULT value = object.get_designMode(* p);
Starting with Internet Explorer 11, the returned property values are lower case rather than capitalized.
You cannot execute script when the value of the IHTMLDocument2::designMode property is set to on.
You can use the IHTMLDocument2::designMode property to put Windows Internet Explorer into a mode so that you can edit the current document.
While the browser is in design mode, objects enter a UI-activated state when the user presses
ENTER, clicks an object that has focus, or double-clicks the object. Objects that are UI-activated have their own window in the document. You can modify the UI only when the object is in a UI-activated state.