Windows Mobile引路蜂地图开发示例：放大、缩小

RasterMap的 zoomIn,zoomOut 用来放大缩小地图。在MainForm中添加两个菜单项mnuZoomIn，mnuZoomOut.

private void mnuZoomIn_Click(object sender, EventArgs e) 
{ 
 _rasterMap.ZoomIn(); 
} 
  
private void mnuZoomOut_Click(object sender, EventArgs e) 
{ 
 _rasterMap.ZoomOut(); 
}