C ArcEngine問題小結（一）

1、mapcontrol的currenttool=null不起作用：

在vb中使用mapcontrol.currenttool=nothing即可，而使用c#就不靈了。解決辦法如下所示，先做一轉換即可。

imapcontrol2 pmainmap2=(imapcontrol2)axmapmain.object;

pmainmap2.currenttool=null;

2、toccontrol的hittest不起作用：

該問題與上一問題類似，做以下處理

itoccontrol ptoccontrol = (itoccontrol)axtocctrl.object;

ptoccontrol.hittest(e.x, e.y, ref item, ref map, ref layer, ref other, ref index);

3、通過toccontrol 控制項的事件調換圖層：

ilayer pmovelayer;

int itolayerindex;

private void axtocctrl_onmousedown(object sender, axesri.arcgis.toccontrol.itoccontrolevents_onmousedownevent e)

else

axtocctrl.mousepointer=esricontrolsmousepointer.esripointerhotlink;}}

private void axtocctrl_onmouseup(object sender, axesri.arcgis.toccontrol.itoccontrolevents_onmouseupevent e)

pmap.movelayer(pmovelayer,itolayerindex);

axmapmain.activeview.refresh();}}

axtocctrl.mousepointer=esricontrolsmousepointer.esripointerarrow;

} }

4、鷹眼的實現

private void drawmapeaglerect(imap pmap, int ired, int igreen, int iblue, int iwidth, object newenvelope)

private void axmapmain_onmapreplaced(object sender, axesri.arcgis.mapcontrol.imapcontrolevents2_onmapreplacedevent e)

}private void axmapeagle_onmousedown(object sender, axesri.arcgis.mapcontrol.imapcontrolevents2_onmousedownevent e)