在extjs，openlayers中添加层

Question

i am working with extjs and openlayers for trying some web application. now i want to create a coordinate bookmark which click than take this coordinate...

but first of all, it must create a layer in which name is "Bookmarks"..when you click on it ita take to the this coordinate...

how can add a layer in which name is "Bookmarks" and how can i go taking coordinate from map...

Answer 1

If I understand your question correct, you will need a vector layer to display the bookmarks:

var my_bookmark_layer = new OpenLayers.Layer.Vector(
    "Bookmarks",    
}, {
    displayInLayerSwitcher: true
});
map.addLayer(my_bookmark_layer);

This will add an empty layer which You can use later on.

To get a coordinate from the map, see this example in the OpenLayers example folder. Then you will need to store the coordinate as a feature in the bookmark layer.

Hope it helps :)