Customizable Drag & Drop enables easy activation of user defined or project specific functions concerning two related objects: A user interface graphically displays objects of a particular module. An extending function extends the drag and drop operation to allow the user to define a new set of semantics...http://www.google.com.tw/patents/US7337409?utm_source=gb-gplus-share專利 US7337409 - Customizable drag and drop for industrial software applications
