I just find some code about frame in sdk at https://developer.leapmotion.com/documentation/csharp/api/gen-csharp/class_leap_1_1_frame.html#ab71e6ee46f0c2593266f9a62d9c5e029
，just like
Frame current = controller.Frame ();
Frame previous = controller.Frame (1);
but it is a static vector and i can't get every frame；
I tried use loop and find there are many same frames in screen，I don‘t know how to get it....who can help me？