void do多边形_Click(object sender, EventArgs e)
{
this.do圆形.ForeColor = Color.White;
this.do矩形.ForeColor = Color.White;
this.do多边形.ForeColor = Color.Yellow;
清除();
当前方式 = E圈选方式.多边形;
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
this.do矩形.ForeColor = Color.Yellow;
当前方式 = E圈选方式.矩形;
this.do矩形.Click += do矩形_Click;
this.do圆形.Click += do圆形_Click;
this.do多边形.Click += do多边形_Click;
this.do关闭.Click += do关闭_Click;
_I地图.MouseDown += out地图_MouseDown;
_I地图.MouseMove += out地图_MouseMove;
_I地图.MouseUp += out地图_MouseUp;
_I地图.MouseDoubleClick += out地图_MouseDoubleClick;
this.do保存.Click += do保存_Click;
this.do取消.Click += do取消_Click;
}