We noticed that none of the MouseEvents, like MouseLeftButtonDown were working for a GraphicsLayer in our WPF application and we tracked it down to the AcceleratedDisplayLayer. I created some sample code to explain.
_map = new Map();
_map.Layers.Add(new ArcGISTiledMapServiceLayer() { Url = "<insert_some_ags_url" });
MapPoint point = new MapPoint(10,10);
_graphicsLayer = new GraphicsLayer();
_graphicsLayer.Graphics.Add(new Graphic() {
Geometry = new Envelope(point.X - 0.5, point.Y - 0.5, point.X + 0.5, point.Y + 0.5),
Symbol = new SimpleFillSymbol() {
Fill = Brushes.Red
}
});
_graphicsLayer.MouseLeftButtonDown += new GraphicsLayer.MouseButtonEventHandler(graphicsLayer_MouseButtonDown);
_map.Layers.Add(_graphicsLayer);
_map.Layers.Add(new AcceleratedDisplayLayers() { ID = "ADL" });
This code above will prevent the MouseLeftButtonDown Event from firing. If we change it to the following it will work just fine.
_map.Layers.Add(new AcceleratedDisplayLayers() { ID = "ADL" });
_map.Layers.Add(_graphicsLayer);
OR
_map.Layers.Add(new AcceleratedDisplayLayers() { ID = "ADL" });
((AcceleratedDisplayLayers)_map.Layers["ADL"]).ChildLayers.Add(_graphicsLayer);
If the AcceleratedDisplayLayers is added after the GraphicsLayer (I guess its on top) seems to prevent mouse messages from passing to the GraphicsLayers underneath. If I am doing something wrong please let me know. We are using the ArcGIS Runtime for WPF 10.2.5.851.
Thanks,
-eric
