combining wheel events

I have an application that is using the wheelEvent handler to zoom in and out of a data window. If the user scrolls the wheel fairly fast, the function is called multiple times, each with a delta of 120 or -120 (depending on which way the user spins). Is there a way to force these events to be combined so the function receives one large delta? Or is there a way to peek into the event queue to see if there are other wheel events pending?

You can override the wheelevent and implement your own logic.
What you can do is use a timer. Start the timer when u get a wheel event and the timer is not running.
Stack the events / store delta value for the wheel events that are received while the timer is active, and ignore the event.
Now when the timer gets timed out, emit a signal with the combined delta

Hope you get the idea :)