C#制作鷹眼的詳細全過程(帶注釋)實例代碼
axMapControl1是主控件,axMapControl2是鷹眼控件
要看清楚事件響應(yīng)
1.鷹眼地圖資源載入
privatevoid axMapControl1_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e)
{
//當主地圖顯示控件的地圖更換時,鷹眼中的地圖也跟隨更換
axMapControl2.LoadMxFile(axMapControl1.DocumentFilename);
axMapControl2.Extent = axMapControl2.FullExtent;
}
2.繪制鷹眼矩形框
private void axMapControl1_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e)
{
// 得到新范圍
IEnvelope pEnv = (IEnvelope)e.newEnvelope;
IGraphicsContainer pGra = axMapControl2.Map as IGraphicsContainer;
IActiveView pAv = pGra as IActiveView;
//在繪制前,清除axMapControl2中的任何圖形元素
pGra.DeleteAllElements();
IRectangleElement pRectangleEle = new RectangleElementClass();
IElement pEle = pRectangleEle as IElement;
pEle.Geometry = pEnv;
//設(shè)置鷹眼圖中的紅線框
IRgbColor pColor = new RgbColorClass();
pColor.Red = 255;
pColor.Green = 0;
pColor.Blue = 0;
pColor.Transparency = 255;
//產(chǎn)生一個線符號對象
ILineSymbol pOutline = new SimpleLineSymbolClass();
pOutline.Width = 2;
pOutline.Color = pColor;
//設(shè)置顏色屬性
pColor = new RgbColorClass();
pColor.Red = 255;
pColor.Green = 0;
pColor.Blue = 0;
pColor.Transparency = 0;
//設(shè)置填充符號的屬性
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. 實現(xiàn)互動
private void axMapControl2_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
IPoint pPt=new PointClass ();
pPt.PutCoords (e.mapX ,e.mapY );
//改變主控件的視圖范圍
axMapControl1 .CenterAt (pPt );
}
相關(guān)文章
c# 調(diào)用Surfer軟件,添加引用的具體操作方法
本篇文章主要是對c#中調(diào)用Surfer軟件,添加引用的具體操作方法進行了介紹,需要的朋友可以過來參考下,希望對大家有所幫助2014-01-01