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Data Layer Events

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Note

Bing Maps Web Control SDK retirement

Bing Maps Web Control SDK is deprecated and will be retired. Free (Basic) account customers can continue to use Bing Maps Web Control SDK until June 30th, 2025. Enterprise account customers can continue to use Bing Maps Web Control SDK until June 30th, 2028. To avoid service disruptions, all implementations using Bing Maps Web Control SDK will need to be updated to use Azure Maps Web SDK by the retirement date that applies to your Bing Maps for Enterprise account type. For detailed migration guidance, see Migrate from Bing Maps Web Control SDK and Migrate Bing Maps Enterprise applications to Azure Maps with GitHub Copilot.

Azure Maps is Microsoft's next-generation maps and geospatial services for developers. Azure Maps has many of the same features as Bing Maps for Enterprise, and more. To get started with Azure Maps, create a free Azure subscription and an Azure Maps account. For more information about azure Maps, see Azure Maps Documentation. For migration guidance, see Bing Maps Migration Overview.

Many applications add mouse events to shapes by looping through each shape and adding an event to it. Doing this results in an event handler being created for each shape. With the Layer class you can add a single event handler to the layer and which applies to all shapes it contains. This requires writing less code, reduces the amount of memory required and provides a small performance benefit. The following code adds some random shapes to a layer and then attaches all the different mouse events to the layer.

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <meta charset="utf-8" />
	<script type='text/javascript'>
    var map;

    function GetMap() {
        map = new Microsoft.Maps.Map('#myMap', {});

        //Create a layer.
        var layer = new Microsoft.Maps.Layer();

        //Add some data to it.
        layer.add(Microsoft.Maps.TestDataGenerator.getPushpins(5, map.getBounds()));
        layer.add(Microsoft.Maps.TestDataGenerator.getPolygons(2, map.getBounds()));
        layer.add(Microsoft.Maps.TestDataGenerator.getPolylines(2, map.getBounds()));

        //Add layer to map.
        map.layers.insert(layer);

        //Add mouse events to the layer.
        Microsoft.Maps.Events.addHandler(layer, 'click', function () { highlight('click'); });
        Microsoft.Maps.Events.addHandler(layer, 'rightclick', function () { highlight('rightclick'); });
        Microsoft.Maps.Events.addHandler(layer, 'mousedown', function () { highlight('mousedown'); });
        Microsoft.Maps.Events.addHandler(layer, 'mouseout', function () { highlight('mouseout'); });
        Microsoft.Maps.Events.addHandler(layer, 'mouseover', function () { highlight('mouseover'); });
        Microsoft.Maps.Events.addHandler(layer, 'mouseup', function () { highlight('mouseup'); });
    }

    function highlight(id) {
        //Highlight the mouse event div to indicate that the event has fired.
        document.getElementById(id).style.background = 'LightGreen';

        //Remove the highlighting after a second.
        setTimeout(function () { document.getElementById(id).style.background = 'white'; }, 1000);
    }
    </script>
    <script type='text/javascript' src='http://www.bing.com/api/maps/mapcontrol?callback=GetMap&key=[YOUR_BING_MAPS_KEY]' async defer></script>
</head>
<body>
    <div id="myMap" style="position:relative;width:600px;height:400px;"></div>

    <div id="click">click</div>
    <div id="rightclick">rightclick</div>
    <div id="mousedown">mousedown</div>
    <div id="mouseout">mouseout</div>
    <div id="mouseover">mouseover</div>
    <div id="mouseup">mouseup</div>
</body>
</html>

If you run this code and hover and click any of the shapes, you will see all these different events fire.

Screenshot of a Bing map that shows a variety of polygons around the map and a list of firing events below the map.