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已答复How to disable Mouse wheel event?

  • 2007年5月29日 22:25NAVI2 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     
    Can anyone help me how to disable mousewheel event for VE map? My application want to disable the mouse wheel action for zooming.

答案

  • 2007年5月30日 0:12Derek Chan Old 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     已答复

    Sure, just override the behaviour of a mousewheel using VE Events.  Sample code that demonstrates this below:

    Code Snippet


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
       <head>
          <title></title>
          <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
          <script src="http://dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=5"></script>
          <script>
          var map = null;
               
          function GetMap()
          {
             map = new VEMap('myMap');
       map.LoadMap();
       map.AttachEvent("onmousewheel", ShapeHandler);
       }  
    function ShapeHandler(e)
    {
      return true;
    }
          </script>
       </head>
       <body onload="GetMap();">
          <div id='myMap' style="position:relative; width:400px; height:400px;"></div>
       </body>
    </html>
         

     
    Hope that helps,

  • 2007年10月23日 17:23Richard_BrundrittMVP, 版主用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     已答复
    If you want to disable the zooming of the mouse wheel but still be able to scroll the page when over top of the map you can do what I did in the sample code below.

    Code Block

    <html>
       <head>
          <title></title>
          <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
          <script src="http://dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=6"></script>
          <script>
             var map = null;
             var pinID = 1;
             var y=0;
             function GetMap()
             {
                map = new VEMap('myMap');
                map.LoadMap();
                map.AttachEvent("onmousewheel", wheelCallback);
             }  
           
            function wheelCallback(e)
            {
                //returning true to cancel default action.
               
                window.scrollBy(0,-5*e.mouseWheelChange);

                 return true;
            }
            
             function AddPin()
             { 
                 try
                 {
                      map.DeleteAllShapes();
                     var latlong=new VELatLong(parseFloat(document.getElementById('lat').value),parseFloat(document.getElementById('long').value));
                    var shape = new VEShape( VEShapeType.Pushpin,latlong);
                    map.AddShape(shape);
                    map.SetCenterAndZoom(latlong, 15);
                }
                catch(e)
                 {
                    alert(e.message);
                 }
             }  
          </script>
       </head>
    <body onload="GetMap();">
    <div align="center">
    <div id='myMap' style="position:relative; width:600px; height:400px;"></div>
    Lat: <INPUT id="lat" type="text" name="start" value="0"/>
    Long: <INPUT id="long" type="text" name="end" value="0"/>
    <INPUT id="addpin" type="button" value="Add Pin" name="addpin" onclick="AddPin();">
    </div>
    <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />
    <br /><br /><br /><br /><br /><br />End of page
       </body>
    </html>


全部回复

  • 2007年5月30日 0:12Derek Chan Old 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     已答复

    Sure, just override the behaviour of a mousewheel using VE Events.  Sample code that demonstrates this below:

    Code Snippet


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
       <head>
          <title></title>
          <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
          <script src="http://dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=5"></script>
          <script>
          var map = null;
               
          function GetMap()
          {
             map = new VEMap('myMap');
       map.LoadMap();
       map.AttachEvent("onmousewheel", ShapeHandler);
       }  
    function ShapeHandler(e)
    {
      return true;
    }
          </script>
       </head>
       <body onload="GetMap();">
          <div id='myMap' style="position:relative; width:400px; height:400px;"></div>
       </body>
    </html>
         

     
    Hope that helps,

  • 2007年5月30日 17:03NAVI2 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     
    thanx  Derek its working as per my requirment, its a very simple change Smile
  • 2007年10月23日 11:51ymikhel 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     
    Hi,

    What if I'd like to change map's event(s) to my handler upon certain conditions, and restore it to the native behaviour after? How do I get the native handler for a map's event(s)?

    Regards,
  • 2007年10月23日 12:28Craig731 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     
    Code Block

    map.DetachEvent("[Handler]", "function()");


    That will cancel out your EventHandler
  • 2007年10月23日 17:23Richard_BrundrittMVP, 版主用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     已答复
    If you want to disable the zooming of the mouse wheel but still be able to scroll the page when over top of the map you can do what I did in the sample code below.

    Code Block

    <html>
       <head>
          <title></title>
          <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
          <script src="http://dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=6"></script>
          <script>
             var map = null;
             var pinID = 1;
             var y=0;
             function GetMap()
             {
                map = new VEMap('myMap');
                map.LoadMap();
                map.AttachEvent("onmousewheel", wheelCallback);
             }  
           
            function wheelCallback(e)
            {
                //returning true to cancel default action.
               
                window.scrollBy(0,-5*e.mouseWheelChange);

                 return true;
            }
            
             function AddPin()
             { 
                 try
                 {
                      map.DeleteAllShapes();
                     var latlong=new VELatLong(parseFloat(document.getElementById('lat').value),parseFloat(document.getElementById('long').value));
                    var shape = new VEShape( VEShapeType.Pushpin,latlong);
                    map.AddShape(shape);
                    map.SetCenterAndZoom(latlong, 15);
                }
                catch(e)
                 {
                    alert(e.message);
                 }
             }  
          </script>
       </head>
    <body onload="GetMap();">
    <div align="center">
    <div id='myMap' style="position:relative; width:600px; height:400px;"></div>
    Lat: <INPUT id="lat" type="text" name="start" value="0"/>
    Long: <INPUT id="long" type="text" name="end" value="0"/>
    <INPUT id="addpin" type="button" value="Add Pin" name="addpin" onclick="AddPin();">
    </div>
    <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />
    <br /><br /><br /><br /><br /><br />End of page
       </body>
    </html>