| FAQ #2594, published on 2002-11-12 |
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| How can I find out by programming whether a scroll knob has been moved with the wheel of the mouse ? |
Just add the code "Mouse Wheel" to your field. Testing the variable _EVE.wparam in this code will give you the direction of the wheel. The value of the variable _EVE.wparam is positive for an upward movement and negative for a downward movement.
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