Calling SET_FLOAT_LIMITS@ will change the current limits on the %fl - Float Limit control which has the handle HWND.
The handle can be found by using the %lc - Handle of Last Control format. The new limits will be MAX and MIN. If the current data is
outside of the new limits then a "refresh" should be generated. For example, the callback
function that calls this routine should return the value 1 rather than 2.