If you are using my suggestion to get rid of the titlebar, then you don't need any additional code at all because there is no way to move the form that way. The only possible way I can think of would be to right-click the taskbar item and select Move in the context menu (I'm not even sure if this contextmenu is available if you set ControlBox to false, don't think so!), but from your other threads I think you are hiding the taskbar item, so that is not possible either I can't think of any other way to move the form.