I've been trying to figure this out for a couple days so far to no luck, but I'm convinced I'm just not looking in the right place.
When you're creating a polygon using TrackShapes, you get this nice transparent green area while you're defining it. How can I get that same transparent look on a polygon once it's defined. Truthfully, I need the area to not be green but be a color that I can define while still allowing the information behind it to be seen.
Thanks for your help!
Kimberly
Kimberly,
We can set the alpha value for a color, 255 means concrete and 0 means totally transparent. Set that color for an AreaStyle and you can easily get that effect. For example, replace the sample Getting Started ->DisplayASimpleMap with the following codes and you will get a transparent US
private void DisplayMap_Load(object sender, EventArgs e)
{
winformsMap1.MapUnit = GeographyUnit.DecimalDegree;
ShapeFileFeatureLayer worldLayer = new ShapeFileFeatureLayer(@"..\..\SampleData\Data\Countries02.shp");
worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;
worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
ShapeFileFeatureLayer USLayer = new ShapeFileFeatureLayer(@"..\..\SampleData\Data\USStates.shp");
USLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = new AreaStyle(new GeoSolidBrush(GeoColor.FromArgb(50, GeoColor.StandardColors.Green)));
USLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
winformsMap1.StaticOverlay.Layers.Add("WorldLayer", worldLayer);
winformsMap1.StaticOverlay.Layers.Add("USLayer", USLayer);
winformsMap1.MapBackground.BackgroundBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);
winformsMap1.CurrentExtent = new RectangleShape(-180.0, 83.0, 180.0, -90.0);
winformsMap1.Refresh();
}
Thanks,
Ben
Thank you! This is exactly what I needed!
(Sorry for the delayed response. Somehow I managed to get myself unsubscribed to the topic.)
Kimberly
That’s great, Kimberly.