相关疑难解决方法(0)

我有一个OpenLayers地图,它有一个光栅基础层,一个矢量图层和一个标记图层.它们以正确的顺序显示,矢量顶部的标记非常好.

但是当我添加一个SelectFeature控件并将其指向矢量图层时,它会突然在标记图层上方绘制,尽管所有努力都会提升标记图层或设置Z索引.似乎SelectFeature控件会覆盖所有绘图顺序设置.这是设计,还是我能以某种方式克服这个问题？

图层定义:

var baselayer = new OpenLayers.Layer.WMS('Norden', 
'http://{myarcgisserver}/ArcGIS/services/mylayer/MapServer/WMSServer', {
    layers :'1,2',
    transparent :false,
    width :'auto',
    height :'auto',
    filter :null
}, {
    isBaseLayer: true,
    singleTile :true,
    ratio :1,
    alpha :false,
    transitionEffect :'resize'
});

var vectorLayer = new OpenLayers.Layer.Vector("Work orders", {
    projection: new OpenLayers.Projection("EPSG:2400"),
    strategies: [new OpenLayers.Strategy.Fixed(), refresh],
    protocol: new OpenLayers.Protocol.HTTP({
        url: "/WorkOrder/WorkOrders.ashx?output=geojson",
        format: new OpenLayers.Format.GeoJSON()
    })
});

var markerlayer = new OpenLayers.Layer.Markers("Markers", {
    projection: new OpenLayers.Projection("EPSG:2400"),
    displayInLayerSwitcher: false
}
);

控件定义:

var selectctrl = new OpenLayers.Control.SelectFeature(
    vectorLayer,
    {
        clickout: true, …