axMapControl1是主控件，axMapControl2是鹰眼控件
要看清楚事件响应
1.鹰眼地图资源载入
复制代码 代码如下:
privatevoid axMapControl1_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e)
{
//当主地图显示控件的地图更换时，鹰眼中的地图也跟随更换
axMapControl2.LoadMxFile(axMapControl1.DocumentFilename);
axMapControl2.Extent = axMapControl2.FullExtent;
}
2.绘制鹰眼矩形框
复制代码 代码如下:
private void axMapControl1_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e)
{
// 得到新范围
IEnvelope pEnv = (IEnvelope)e.newEnvelope;
IGraphicsContainer pGra = axMapControl2.Map as IGraphicsContainer;
IActiveView pAv = pGra as IActiveView;
//在绘制前，清除axMapControl2中的任何图形元素
pGra.DeleteAllElements();
IRectangleElement pRectangleEle = new RectangleElementClass();
IElement pEle = pRectangleEle as IElement;
pEle.Geometry = pEnv;
//设置鹰眼图中的红线框
IRgbColor pColor = new RgbColorClass();
pColor.Red = 255;
pColor.Green = 0;
pColor.Blue = 0;
pColor.Transparency = 255;
//产生一个线符号对象
ILineSymbol pOutline = new SimpleLineSymbolClass();
pOutline.Width = 2;
pOutline.Color = pColor;
//设置颜色属性
pColor = new RgbColorClass();
pColor.Red = 255;
pColor.Green = 0;
pColor.Blue = 0;
pColor.Transparency = 0;
//设置填充符号的属性
IFillSymbol pFillSymbol = new SimpleFillSymbolClass();
pFillSymbol.Color = pColor;
pFillSymbol.Outline = pOutline;
IFillShapeElement pFillShapeEle = pEle as IFillShapeElement;
pFillShapeEle.Symbol = pFillSymbol;
pGra.AddElement((IElement)pFillShapeEle, 0);
pAv.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}
3. 实现互动
复制代码 代码如下:
private void axMapControl2_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
IPoint pPt=new PointClass ();
pPt.PutCoords (e.mapX ,e.mapY );
//改变主控件的视图范围
axMapControl1 .CenterAt (pPt );
}
【C#制作鹰眼的详细全过程(带注释)实例代码】相关文章：
★ c# 冒泡排序算法(Bubble Sort) 附实例代码