使用C# Form 简单的实现了弹幕效果

1.创建一个Form 设置

2.添加一个计时器

3. 代码

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Drawing.Text;

using System.Linq;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace DanMu

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

Rectangle rec = Screen.GetWorkingArea(this);

this.Height = rec.Height / 3 * 2; // 3分之2

this.Width = rec.Width;

this.Location = new Point(0, 0);

this.BackColor = Color.White;

this.TransparencyKey = Color.White;

this.Opacity = 1;

AddTanMu("你开启了弹幕");

//测试运行

Thread th1 = new Thread(new ThreadStart(test));

th1.Start();

}

private void test()

{

while (true)

{

AddTanMu(Guid.NewGuid().ToString());

Thread.Sleep(new Random().Next(2000, 3500));

}

}

public void AddTanMu(String word)

{

Label label = new Label();

label.Text = word;

label.AutoSize = true;

label.ForeColor = Color.Red;

label.BackColor = Color.Transparent;

label.Font = new Font("宋体", 20);

label.Location = new Point(this.Width, new Random().Next(this.Height - label.Height));

this.Invoke(new Action(() =>

{

this.Controls.Add(label);

}));

}

private void Timer_Tick(object sender, EventArgs e)

{

//方法1：

//foreach (Label label in this.Controls)

//{

// Task.Run(() =>

// {

// //单独执行的委托，防止卡顿

// label.Invoke(new Action(() =>

// {

// //步数、速度

// for (int v = 0; v < 3; v++)

// {

// label.Left -= 2;

// }

// }));

// //超出移除

// if (label.Left + label.Width < 0)

// {

// this.Invoke(new Action(() =>

// {

// this.Controls.Remove(label);

// label.Dispose();

// }));

// }

// });

//}

//方法2：

foreach (Label label in this.Controls)

{

label.Invoke(new Action(() =>

{

//步数、速度

//【3(次数)*2(步数)=6(速度)】

for (int v = 0; v < 3; v++)

{

label.Left -= 2;

}

}));

//超出移除

if (label.Left + label.Width < 0)

{

label.Visible = false;

this.Controls.Remove(label);

}

}

}

}

}

4.效果

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