C# 如何让treeview 控件中的选中节点闪烁？

[u010710610]

C# 如何让treeview 控件中的选中节点闪烁？

[老联]

这一下子看好了，这一下子流水账

[jjiang]

using System;
using System.Drawing;
using System.Windows.Forms;
namespace BlinkTreeNodeDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Load += new EventHandler(Form1_Load);
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            SetupBlinkTreeView();
        }
 
        private void SetupBlinkTreeView()
        {
            while (!this.IsHandleCreated) ;
            //每秒闪烁一次
            BlinkTreeNodeRenderer bt1 = new BlinkTreeNodeRenderer(treeView1, 1);
            //每秒闪烁10次
            BlinkTreeNodeRenderer bt2 = new BlinkTreeNodeRenderer(treeView2, 10);
            //每秒闪烁25次
            BlinkTreeNodeRenderer bt3 = new BlinkTreeNodeRenderer(treeView3, 25);
        }
    }
 
    public class BlinkTreeNodeRenderer
    {
        private TreeView treeView;
        private System.Threading.Thread th;
 
        private int blinkRate;
        private bool isBlink = false;
 
        public BlinkTreeNodeRenderer(TreeView treeView)
        {
            Initialize(treeView, 1);
        }
 
        public BlinkTreeNodeRenderer(TreeView treeView, int blinkRate)
        {
            Initialize(treeView, blinkRate);
        }
 
        private void Initialize(TreeView treeView, int blinkRate)
        {
            if (blinkRate < 0 || blinkRate > 1000)
            {
                throw new ArgumentOutOfRangeException("blinkRate", "blinkRate应大于0且小于1000");
            }
 
            this.treeView = treeView;
            this.blinkRate = blinkRate;
 
            this.treeView.HideSelection = false;
            this.treeView.DrawMode = TreeViewDrawMode.OwnerDrawText;
            this.treeView.DrawNode += new DrawTreeNodeEventHandler(treeView_DrawNode);
            this.treeView.Disposed += new EventHandler(treeView_Disposed);
 
            this.th = new System.Threading.Thread(new System.Threading.ThreadStart(Blink));
            this.th.IsBackground = true;
            this.th.Start();
        }
 
        //一定的时间间隔更改isBlink的值，并使当前选择节点区域无效（不用对整个控件无效），发送绘制消息
        private void Blink()
        {
            int sleepTime = 1000 / blinkRate;
            while (true)
            {
                System.Threading.Thread.Sleep(sleepTime);
                isBlink = !isBlink;
                treeView.BeginInvoke(new MethodInvoker(delegate()
                {
                    if (treeView.SelectedNode != null && treeView.Focused)
                    {
                        treeView.Invalidate(treeView.SelectedNode.Bounds);
                    }
                }));
            }
        }
 
        private void treeView_DrawNode(object sender, DrawTreeNodeEventArgs e)
        {
            //设置为false由用户绘制而非操作系统绘制
            e.DrawDefault = false;
            if ((e.State & TreeNodeStates.Selected) != 0 || (e.State & TreeNodeStates.Focused) != 0)
            {
                //判断节点是否已选择或者已获得焦点，如果是true则绘制高亮显示、焦点框
                e.Graphics.FillRectangle(new SolidBrush(SystemColors.Highlight), e.Bounds);
                using (Pen focusedPen = new Pen(Color.Black))
                {
                    focusedPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
                    Rectangle focusedBounds = e.Bounds;
                    focusedBounds.Size = new Size(e.Bounds.Width - 1, e.Bounds.Height - 1);
                    e.Graphics.DrawRectangle(focusedPen, focusedBounds);
                }
                //节点根据isBlink状态绘制显示文本
                if (isBlink || !treeView.Focused)
                {
                    TextRenderer.DrawText(e.Graphics, e.Node.Text, e.Node.NodeFont, e.Bounds, Color.White);
                }
            }
            else
            {
                //绘制未被选择的其余节点
                TextRenderer.DrawText(e.Graphics, e.Node.Text, e.Node.NodeFont, e.Bounds, e.Node.ForeColor);
            }
        }
 
        private void treeView_Disposed(object sender, EventArgs e)
        {
            th.Abort();
            th = null;
        }
    }
}

[jiaoshiyao]

高手莫非都在用VB.Net？？？

引用 6 楼 sp1234 的回复:

改一改文字（例如改成空白），通过定时器在三分之一秒钟再改回来。反复几次之后，结束这个过程。 例如在你的窗口弄一个Interval等于0.333秒的定时器（Time1），然后如果要改某个特定的Node，可以这样写

    Private nd As TreeNode
    Private ct As Integer

    Private Sub TestButton1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        nd = Me.TreeView1.Nodes(1).Nodes(0).Nodes(0)   '选择你要测试的node
        ct = 0
        Timer1.Start()
    End Sub

    Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
        If (nd.Text = String.Empty) Then
            nd.Text = "Asfasfasfad"
            nd.ForeColor = Color.Red
        Else
            nd.Text = String.Empty
        End If
        If ct > 10 And nd.Text <> String.Empty Then
            nd.ForeColor = Color.Black
            Timer1.Stop()
        Else
            ct += 1
        End If
    End Sub

[ruberzhong]

二楼的回复是最经典的，还用特殊代码就行了。

[小陆瓶子]

二楼是夜猫子，但还是要说辛苦了

[wy811007]

学习了 好像很给力的样子哦

[yyantifa]

收藏一下..

[xisat]

GIFmaker和代码都值得学习

[Ki1381]

收藏一下，用的着

[卧_槽]

变个色就挺好了，闪啊闪的头晕。

[智商余额不足]

引用 35 楼 yuwenge 的回复:

变个色就挺好了，闪啊闪的头晕。

[threenewbee]

引用 36 楼 hwenycocodq520 的回复:

引用 35 楼 yuwenge 的回复:

变个色就挺好了，闪啊闪的头晕。

话说你贴出修改后的程序，我帮你patch啊。

[zdrl]

灰常不错的说：）

[Z-人]

哈哈 好高级的样子

[csdnFUCKINGSUCKS]

Mark

[u010009545]

Mark

[此用户已被注册]

引用 6 楼 sp1234 的回复:

改一改文字（例如改成空白），通过定时器在三分之一秒钟再改回来。反复几次之后，结束这个过程。 例如在你的窗口弄一个Interval等于0.333秒的定时器（Time1），然后如果要改某个特定的Node，可以这样写

    Private nd As TreeNode
    Private ct As Integer

    Private Sub TestButton1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        nd = Me.TreeView1.Nodes(1).Nodes(0).Nodes(0)   '选择你要测试的node
        ct = 0
        Timer1.Start()
    End Sub

    Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
        If (nd.Text = String.Empty) Then
            nd.Text = "Asfasfasfad"
            nd.ForeColor = Color.Red
        Else
            nd.Text = String.Empty
        End If
        If ct > 10 And nd.Text <> String.Empty Then
            nd.ForeColor = Color.Black
            Timer1.Stop()
        Else
            ct += 1
        End If
    End Sub

居然是VB?

[jiaoshiyao]

引用 5 楼 hwenycocodq520 的回复:

if (blinkRate <= 0 || blinkRate > 1000)

你用的什么录屏软件？？？

[智商余额不足]

引用 51 楼 jiaoshiyao 的回复:

引用 5 楼 hwenycocodq520 的回复:

if (blinkRate <= 0 || blinkRate > 1000)

你用的什么录屏软件？？？

使用 GifMaker这个小工具

[leecai222]

加入收藏，谢谢