超图FAQ: WMS地图服务添加到地图后设置图层透明色:
Layer layer = m_mapControl.getMap().getLayers().add(dataset, true);
LayerSettingImage layerSettingImage = (LayerSettingImage)layer.getAdditionalSetting() ;
layerSettingImage.setTransparent(true);
layerSettingImage.setTransparentColor(new Color(132,255,132));
layerSettingImage.setTransparentColorTolerance(50);