最近做一個項目，用到離線谷歌地圖的開發， 而現在谷歌地圖在中國的發展不是很完美，導致項目的定項遲遲不能決定。
后來使用了一個地圖插件mymapw.ocx，完美地解決了Winform窗體里非要加載webbrowse寫JScript的弊端。
目前，項目已經實施，特將里面的地圖開發部分概要摘錄下來，供大家參考：
1.1 加載Mymap.ocx 地圖控件到c#的窗體上
二、先增加地圖的基本功能操作： 放大、縮小、移動、測量距離、測量面積
增加放大、縮小、移動地圖的代碼
private void tsbMax_Click(object sender, EventArgs e)
{
MyMap1.SetMapOperateMode(30);//放大
}
private void tsbMin_Click(object sender, EventArgs e)
{
MyMap1.SetMapOperateMode(20);//縮小
}
private void tsbMove_Click(object sender, EventArgs e)
{
MyMap1.SetMapOperateMode(40);//移動
}
1.3 增加測量距離的代碼
private void tsbDistance_Click(object sender, EventArgs e)
{
MyMap1.SetMapOperateMode(50);//測量距離
}
增加測量面積的代碼
private void tsbArea_Click(object sender, EventArgs e)
{
MyMap1.SetMapOperateMode(90);//測量面積
}
保存或修改標注點
private void btnPointSave_Click(object sender, EventArgs e)
{
string strResult = null;
string strPoiName = txtPoiName.Text;//名稱
string strLongitude = txtJD.Text; //經度
string strLatitude = txtWD.Text; //緯度
string strCity = ComboCity.Text; //所屬城市
string strMinScale = cmbMin.Text; //最小顯示級別
string strMaxScale = cmbMax.Text; //最大顯示級別
string strFontName = ComboFont.Text; //宋體
string strFontSize = ComboFontSize.Text ; //字體大小
string strFrontColor = m_Color.ToString();//字體顏色
string strBmpFileName = "3.bmp"; //標記圖標所屬的文件名
string strBmpIndex = txtBMPindex.Text; //在圖標文件里的索引
string strObjectID = txtInfo.Text; //氣泡里顯示的文字
string strID = "";
int nID = 0;
if( m_PointADDorEDITtype == 1)
{//增加新標注
m_PointAddID++;
nID = m_PointAddID;
strID = nID.ToString();
strResult = strResult + strID + "," + strPoiName + "," + strCity + "," + strFontName + "," + strFontSize + ","
+ strFrontColor + "," + strMinScale + "," + strMaxScale + "," + strBmpFileName + "," + strBmpIndex + ","
+ strLongitude + "," + strLatitude + "," + strObjectID + "," + ";";
}
else if(m_PointADDorEDITtype == 2)
{//修改標注
nID = m_PointEditID;
strID = nID.ToString();
strResult = strResult + strID + "," + strPoiName + "," + strCity + "," + strFontName + "," + strFontSize + ","
+ strFrontColor + "," + strMinScale + "," + strMaxScale + "," + strBmpFileName + "," + strBmpIndex + ","
+ strLongitude + "," + strLatitude + "," + strObjectID + "," + ";";
}
//''標准的''{"116,lim,青島市,宋體,12,0,0,500,2.bmp,4,41896957,13454163,,;"}
MyMap1.AddMyPoi(nID, strResult);
MyMap1.DrawMap();
}
在標注點的單擊觸發事件OnSelectPoi函數里處理自己想要做的事情(例如單擊后彈出一個窗體，顯示該標注點的一些信息)
private void MyMap1_OnSelectPoi(object sender, AxMYMAPLib._DMyMapEvents_OnSelectPoiEvent e)
{
int nID = e.nID;
if(!m_bEditPointState)
{
FrmPic form = new FrmPic(nID);
form.ShowDialog();
MyMap1.SetMapOperateMode(40);// '''運動狀態
}
}
另外，還有添加道路、透明圓形、透明多邊形、透明矩形、箭頭等函數， 第一次發表文章，先寫這么多吧，留着以后再整理。