Promoting a Graph View widget to GLDisplayListWidget

1. Select the Graph View widget that has been inserted in your user interface, right click and select Promote To (screenshot).
   
   
2. Specify GLDisplayListWidget as the promoted class name and GLDisplayListWidget.h as the header file, and then select ok. (screenshot).
   
   
3. Check global include (screenshot).
   
   
4. Check object inspector to verify that that class associated with the inserted widget has changed to GLDisplayListWidget. (screenshot).
   
   
5. Save the user interface file.