winfrom中可以让listbox中得数据自动循环滚动吗?

tangserver 2009-04-22 09:56:06

我现在有个listbox,行数是固定得,就想要它像某些网站上一样循环滚动,要是能做到鼠标放上去就停下最好了

...全文

197 10 打赏收藏转发到动态举报

写回复

用AI写文章

10 条回复

切换为时间正序

请发表友善的回复…

发表回复

tangserver 2009-04-22

打赏
举报

是winfrom程序,如果用TextBox怎么把DataSet里面得数据给TextBox显示呢?

freewind0521 2009-04-22

打赏
举报

给个WinForm中TextBox控件循环自动滚动示例，应该差不多吧



using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices

namespace WindowsApplication27

{

    /**//// <summary>

    /// 演示如何在TextBox中让文字循环滚动:

       /// </summary>

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();



            this.textBox1.Clear();

            for (int i = 0; i <= 20;i++ )

            {

                this.textBox1.Text += string.Format("{0}:jinjazz__{1} ", i,i);

            }

            this.timer1.Interval = 200;

            this.timer1.Start();

        }



        //发送消息

        [DllImport("user32.dll", EntryPoint = "SendMessage")]

        public static extern int SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam);

        //获取滚动条位置

        [DllImport("user32")]

        public static extern int GetScrollPos(IntPtr hwnd, int nBar);

        //设置滚动条位置

        [DllImport("user32.dll")]

        static extern int SetScrollPos(IntPtr hWnd, int nBar,

                                       int nPos, bool bRedraw);



        public const int EM_LINESCROLL = 0xb6;

 

        private void timer1_Tick(object sender, EventArgs e)

        {

            int i=  GetScrollPos(this.textBox1.Handle,1);



            //向下滚动一行

            SendMessage(this.textBox1.Handle, EM_LINESCROLL, 0, 1);//0，1代表垂直滚动条向下滚动



            //判断是否有位置变化，如果没有则说明到了底部，返回开始处

            if (i == GetScrollPos(this.textBox1.Handle, 1))

           {

                //回到顶部，这里用SetScrollPos似乎有问题，滚动条和文字不是同步更新

                this.textBox1.SelectionStart = 0;

                this.textBox1.SelectionLength = 1;

                this.textBox1.ScrollToCaret();

                this.textBox1.SelectionLength = 0;

            }

            Console.WriteLine(i);

        }

        private void textBox1_MouseEnter(object sender, EventArgs e)

        {

            this.timer1.Stop();

        }

        private void textBox1_MouseLeave(object sender, EventArgs e)

        {

            this.timer1.Start();

        }

    }

}