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Mouse Wheel Values

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Mouse Wheel Values
« on: February 24, 2015, 11:30:30 »

My mouse wheel delta is always in multiples of 120. I looked through the code and couldnt find anything significant relating to 120 so I thought I would ask if anyone knows what the 120 relates to? and how I should handle it?

Is it an arbitrary value where...

float notchMoves=DeltaWheel/120; will be sufficient handling in all situations?

is the 120 an OS set value that the user can configure to change the amount of delta movement?

I look forward to your replies and thanks in advance.