topic Re: Stop Panning when zoom with mouse in ArcGIS API for Silverlight Questions

Stop Panning when zoom with mouse

centuitcentuit — Thu, 27 May 2010 20:31:08 GMT

Hi,

Is there a way to stop panning to the cursor when a user uses the mouse wheel to zoom ?
Currently in V2 Beta and in previous versions when a user uses the mouse wheel to zoom, the map
shifts/pans the cursor when zooming.

Please advise,
Thanks

Re: Stop Panning when zoom with mouse

dotMorten_esri — Fri, 28 May 2010 00:03:54 GMT

I'm not sure I understand the problem. When you zoom, the mouse zooms around where the mouse cursor is (ie. if you hold the mouse on top of a city and zoom, the city will stay under the mouse cursor). There shouldn't be any panning involved.

Re: Stop Panning when zoom with mouse

centuitcentuit — Fri, 28 May 2010 11:41:26 GMT

You are right, the perception is that it pans. However, I would like to have the mouse wheel zooming behave just like the Navigation control zoom slider. Can this be accomplished ? is so, can you provide a small example or guide me where to look for it.

Thanks

Re: Stop Panning when zoom with mouse

dotMorten_esri — Fri, 28 May 2010 16:47:35 GMT

Sorry. The zooming behavior is by design. You might be able to intercept the mousewheel zoom and cancel it so it doesn't bubbles to the map. You can then do the Zoom call yourself.

Re: Stop Panning when zoom with mouse

centuitcentuit — Mon, 31 May 2010 13:03:59 GMT

Morten,

Thanks for the reply, however I found what I was looking for by using

      <i:Interaction.Behaviors>
                <esriBehaviors:MaintainExtentBehavior />
      </i:Interaction.Behaviors>

which does does the same type of zomming as if I would use the navigation slider.

Thanks again.