UIHANDLER OnMouseWheel

Invoked when the mouse wheel is scrolled while hovering over a widget.
 ScriptRegion OnMouseWheel(self, delta)
==Arguments==
:;self: - The widget receiving the mouse input
:;delta: : Indicates the direction the wheel is spinning
::* 1 for spinning up
::* -1 for spinning down
==Details==
* If a widget does not have an OnMouseWheel handler, the event is passed on to underlying frames.