Question

我一直在网上搜索这个问题并且已经通过文档，但是没有成功找到解决方案。

在我的代码中，我创建了一个MasterPane并使用了13个GraphPanes，问题是如果有很多图形，细节变得难以区分，因此我想选择（通过点击）图形并将其放大。是否有特定的实现这一目标的功能。如果没有，将采取哪些步骤。

提前谢谢

Answer 1

即使很晚，我希望它能帮助别人我们的想法是使用MasterPan PaneList集合我在窗口中添加了几个按钮并从中进行控制，另一种方式是是在MasterPan类中使用FindPane方法，并通过单击执行此操作我将展示两种方式代码如下：

   // graphSystem Class
   MasterPane masterPane;
    PaneList plist = new PaneList();

    private void InitGraphs()
    {
        //Zedgraph control 
        var zgc = Apprefs.Zedgraph;
        //MasterPan
        masterPane = zgc.CreateMasterPan(Title, System.Drawing.Color.White);

        // CreateMultiGraph is my own API to create Graph
        zgc.CreateMultiGraph("Graph1", 1, "G1xtitle", "G1ytitle", false);
        zgc.CreateMultiGraph("Graph2", 1, "G2xtitle", "G2ytitle", false);
        zgc.CreateMultiGraph("Graph3", 1, "G3xtitle", "G3ytitle", false);

        // save the Pans
             foreach (GraphPane graph in masterPane.PaneList)
                plist.Add(graph);            
    }
    //---------------------------------------------------------------------------
    public void Englare(RichButton button)
    {
        var graph = Apprefs.Zedgraph2.graph;

        if (button.Name == "Show1")
        {
            ShowOneGraph(0);
        }
        else if (button.Name == "Show2")
        {
            ShowOneGraph(1);
        }
        else if (button.Name == "ShowAll")
        {
            ShowAllGraphs();
        }
    }
    //---------------------------------------------------------------------------
    private void ShowOneGraph(int Graphindex)
    {
        if (masterPane == null) return;
        var graph = Apprefs.Zedgraph.graph;

        if (Graphindex >= 0 && Graphindex < plist.Count)
        {
            masterPane.PaneList.Clear();
            masterPane.PaneList.Add(plist[Graphindex]);

            Layout();
        }
    }
    //---------------------------------------------------------------------------
    private void ShowAllGraphs()
    {
        if (masterPane == null) return;
        var graph = Apprefs.Zedgraph.graph;

            masterPane.PaneList.Clear();
            foreach (GraphPane gr in plist)
                masterPane.PaneList.Add(gr);

            Layout();           
    }
    //---------------------------------------------------------------------------
    private void Layout()
    {
        var graph = Apprefs.Zedgraph2.graph;
        using (Graphics g = graph.CreateGraphics())
        {
            masterPane.SetLayout(g, PaneLayout.SingleColumn);
            graph.AxisChange();
            graph.Refresh();
        }
    }
    //---------------------------------------------------------------------------

way2：通过点击图表来发挥作用：
添加此方法：

        //---------------------------------------------------------------------------
    GraphPane lastpan;
    public void UCclicked(PointF mousePt)
    {
        GraphPane pan= masterPane.FindPane(mousePt);
        if (pan != null)
        {
            if (pan == lastpan)
            {
                ShowAllGraphs();
                lastpan = null;
            }
            else
            {
                ShowOneGraph(plist.IndexOf(pan));
                lastpan = pan;
            }
        }        }

同时注册点击事件：

  zgcGraph.MouseDoubleClick += new MouseEventHandler(zgcGraph_MouseDoubleClick);

最后：

        void zgcGrzgcGraph_MouseDoubleClick(object source, System.Windows.Forms.MouseEventArgs e)
    {
        if (Apprefs.graphSystem != null)
        {
            System.Drawing.PointF mousePt = new System.Drawing.PointF(e.X, e.Y);
            Apprefs.graphSystem.UCclicked(mousePt);
        }
    }

就是这样！

如何在Zedgraph中选择和放大Masterpane

1 个答案: