C # to make Eagle's eye in a detailed whole process (with annotations) instance Code _c# tutorial

AxMapControl1 is the main control, AxMapControl2 is an eagle eye control

To see the event response

1. Eagle Eye Map Resource Loading

Copy Code code as follows:

Privatevoid axmapcontrol1_onmapreplaced (object sender, Imapcontrolevents2_onmapreplacedevent e)

{

When the main map shows the control's map to be replaced, the map in the Eagle's eye follows the replacement

Axmapcontrol2.loadmxfile (Axmapcontrol1.documentfilename);

Axmapcontrol2.extent = axmapcontrol2.fullextent;

}

2. Draw the eagle eye rectangular frame

Copy Code code as follows:

private void Axmapcontrol1_onextentupdated (object sender, Imapcontrolevents2_onextentupdatedevent e)

{

Get a new range

Ienvelope penv = (ienvelope) e.newenvelope;

Igraphicscontainer Pgra = Axmapcontrol2.map as Igraphicscontainer;

Iactiveview pAv = Pgra as Iactiveview;

Clears any graphic element in the AxMapControl2 before drawing

Pgra.deleteallelements ();

Irectangleelement Prectangleele = new Rectangleelementclass ();

IElement PEle = Prectangleele as ielement;

Pele.geometry = penv;

Set the Red Line box in the Eagle's eye chart

Irgbcolor Pcolor = new Rgbcolorclass ();

pcolor.red = 255;

Pcolor.green = 0;

Pcolor.blue = 0;

Pcolor.transparency = 255;

Produces a line symbol object

Ilinesymbol poutline = new Simplelinesymbolclass ();

Poutline.width = 2;

Poutline.color = Pcolor;

Set color Properties

Pcolor = new Rgbcolorclass ();

pcolor.red = 255;

Pcolor.green = 0;

Pcolor.blue = 0;

pcolor.transparency = 0;

Set the properties of a fill symbol

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. Achieving interaction

Copy Code code as follows:

private void Axmapcontrol2_onmousedown (object sender, Imapcontrolevents2_onmousedownevent e)

{

IPoint ppt=new Pointclass ();

Ppt.putcoords (E.MAPX, e.mapy);

Change the view scope of the main control

AxMapControl1. Centerat (pPt);

}