Some questions about the WGC

Question

Hi, i'm a new user of theWGC, and I have some doubts about using it:

1. When I start collecting, can I hide the yellow box or change the style?
2. When I use a demo of WGC, I sometimes find that the frame pool size is 0, and there is no screen data in it. In this case, how do I catch the exception?
   Thank you!