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I am having problems with the zoom in QGIS 1.8.0 where a slight move of the scroll wheel on the mouse zooms way way out. It will re-render at each zoom level and with large datasets it takes over the computer for sometimes up to a minute. Is there a way to disable the mouse wheel zoom in QGIS?

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I hope somebody can answer this. It's even worse on laptops with scrolling trackpads. – L_Holcombe Oct 19 '12 at 19:34
up vote 9 down vote accepted

In the preferences under 'Panning and Zooming' there is a dropdown labeled 'Mouse Wheel Action'

Set this to 'Nothing' and all will be well.

enter image description here

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Thanks, that fixed the problem. – CDavis Oct 23 '12 at 17:40
You might also want to look at the options on the identify function as changing them from the default 'selected' is more like Arcmap – Stevetech Nov 3 '12 at 10:25
Also found that setting Mouse Wheel Action as 'Zoom to mouse cursor' and setting Zoom factor to 1.1 is a reasonable work-a-round. Then a light tap on the magic mouse if zooming in too fast will stop the zoom in its tracks. – Dion Mar 16 '14 at 8:12

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