/* 鼠标交互:
* 1. OnMouseDown
* 2. OnDoubleClick
* 3. OnMouseMove
*/
private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
//IMapControlEvents2_OnMouseDownEvent e 的e.x和e.MapX有什么区别？
if (miAddFeature.Checked == true)
{
//AddPoint模式
if (miAddPoint.Checked == true)
{
//if (!AddPoint(e.mapX, e.mapY))
//MessageBox.Show("添加点失败！");
AddPoint(e.mapX, e.mapY);
}
//AddLine模式
else if (miAddLine.Checked == true)
{
//问题在于，需要有个地方来存放INewLineFeedback——现在试着使用全局变量
//如果类的全局变量为空，为类全局变量新建实例
if (drawAndAddLine == null)
{
drawAndAddLine = new DrawAndAddLine(axMapControl1.Map);
drawAndAddLine.OnMouseDown(e.button, e.shift, e.x, e.y);
}
//不为空，则在其中添加点
else
{
drawAndAddLine.OnMouseDown(e.button, e.shift, e.x, e.y);
}
}
else if (miAddPolygon.Checked == true)
{
if (drawAndAddPolygon == null)
{
drawAndAddPolygon = new DrawAndAddPolygon(axMapControl1.Map);
drawAndAddPolygon.OnMouseDown(e.button, e.shift, e.x, e.y);
}
//不为空，则在其中添加点
else
{
drawAndAddPolygon.OnMouseDown(e.button, e.shift, e.x, e.y);
}
}
}
}
private void axMapControl1_OnDoubleClick(object sender, IMapControlEvents2_OnDoubleClickEvent e)
{
if (miAddFeature.Checked == true)
{
if (miAddLine.Checked == true)
{
//结束添加线时，双击，此时首先会调用OnMouseDown，添加最后一个点
//if (!AddLine(drawAndAddLine.OnDoubleClick(e.button, e.shift, e.x, e.y)))
AddLine(drawAndAddLine.OnDoubleClick(e.button, e.shift, e.x, e.y));
//MessageBox.Show("添加线失败！");
//置空还原
drawAndAddLine = null;
}
else if (miAddPolygon.Checked == true)
{
//结束添加线时，双击，此时首先会调用OnMouseDown，添加最后一个点
//if (!AddPolygon(drawAndAddLine.OnDoubleClick(e.button, e.shift, e.x, e.y)))
AddPolygon(drawAndAddPolygon.OnDoubleClick(e.button, e.shift, e.x, e.y));
//MessageBox.Show("添加面失败！");
//置空还原
drawAndAddPolygon = null;
}
}
}