API GetCursorDelta

Returns the distance that the cursor has moved since the last frame.
 x, y = GetCursorDelta()
==Returns==
:;x: - Distance along the X axis that the cursor has travelled.
:;y: - Distance along the Y axis that the cursor has travelled.
==Details==
* If the cursor hasn't moved between two frames, this function will return zeroes.
* Values returned by this function are independent of UI scaling. The GetScaledCursorDelta utility function can be used to apply the effective scale of UIParent to the returned values.