Christian,
I tried the following code, and it works fine like a champs.
winformsMap1.MapUnit = GeographyUnit.DecimalDegree;
winformsMap1.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);
WorldMapKitWmsDesktopOverlay worldMapKitDesktopOverlay = new WorldMapKitWmsDesktopOverlay();
winformsMap1.Overlays.Add(worldMapKitDesktopOverlay);
winformsMap1.InteractiveOverlays.Clear();
TrackInteractiveOverlay trackInterativeOverlay = new TrackInteractiveOverlay();
winformsMap1.TrackOverlay = trackInterativeOverlay;
winformsMap1.InteractiveOverlays.Add(trackInterativeOverlay);
EditInteractiveOverlay editInteractiveOverlay = new EditInteractiveOverlay();
winformsMap1.EditOverlay = editInteractiveOverlay;
winformsMap1.InteractiveOverlays.Add( editInteractiveOverlay);
ExtentInteractiveOverlay extentInteractiveOverlay = new ExtentInteractiveOverlay();
winformsMap1.ExtentOverlay = extentInteractiveOverlay;
winformsMap1.InteractiveOverlays.Add(extentInteractiveOverlay);
winformsMap1.CurrentExtent = new RectangleShape(-139.2, 92.4, 120.9, -93.2);
winformsMap1.Refresh();
Any more questions just feel free to let me know.
Thanks.
Yale