{"id":215,"date":"2009-04-06T12:30:59","date_gmt":"2009-04-06T12:30:59","guid":{"rendered":""},"modified":"2009-04-06T12:30:59","modified_gmt":"2009-04-06T12:30:59","slug":"215","status":"publish","type":"post","link":"https:\/\/www.poloo.org\/?p=215","title":{"rendered":"C#WinForm\u7684TextBox\u81ea\u52a8\u5faa\u73af\u6eda\u52a8(\u8f6c)"},"content":{"rendered":"


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;<\/p>\n

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        \/\/\u53d1\u9001\u6d88\u606f
        [DllImport(\"user32.dll\", EntryPoint = \"SendMessage\")]
        public static extern int SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam);
        \/\/\u83b7\u53d6\u6eda\u52a8\u6761\u4f4d\u7f6e
        [DllImport(\"user32\")]
        public static extern int GetScrollPos(IntPtr hwnd, int nBar);
        \/\/\u8bbe\u7f6e\u6eda\u52a8\u6761\u4f4d\u7f6e
        [DllImport(\"user32.dll\")]
        public static extern int SetScrollPos(IntPtr hWnd, int nBar, int nPos, bool bRedraw);
        public const int EM_LINESCROLL = 0xb6;<\/p>\n

        public Form1()
        {
            InitializeComponent();<\/p>\n

            this.textBox1.Clear();
            for (int i = 0; i <= 100; i++)
            {
                this.textBox1.Text += string.Format(\"{0}:zhyleo__{1} \t\", i, i);
            }
            this.textBox1.SelectionStart = 0;
            this.timer1.Interval = 100;
            this.timer1.Start();
        }<\/p>\n

        private void timer1_Tick(object sender, EventArgs e)
        {
            int i = GetScrollPos(this.textBox1.Handle, 1);<\/p>\n

            \/\/\u5411\u4e0b\u6eda\u52a8\u4e00\u884c
            SendMessage(this.textBox1.Handle, EM_LINESCROLL, 0, 1);\/\/0\uff0c1\u4ee3\u8868\u5782\u76f4\u6eda\u52a8\u6761\u5411\u4e0b\u6eda\u52a8<\/p>\n

            \/\/\u5224\u65ad\u662f\u5426\u6709\u4f4d\u7f6e\u53d8\u5316\uff0c\u5982\u679c\u6ca1\u6709\u5219\u8bf4\u660e\u5230\u4e86\u5e95\u90e8\uff0c\u8fd4\u56de\u5f00\u59cb\u5904
            if (i == GetScrollPos(this.textBox1.Handle, 1))
            {
                \/\/\u56de\u5230\u9876\u90e8\uff0c\u8fd9\u91cc\u7528SetScrollPos\u4f3c\u4e4e\u6709\u95ee\u9898\uff0c\u6eda\u52a8\u6761\u548c\u6587\u5b57\u4e0d\u662f\u540c\u6b65\u66f4\u65b0
                this.textBox1.SelectionStart = 0;
                this.textBox1.SelectionLength = 1;
                this.textBox1.ScrollToCaret();
                this.textBox1.SelectionLength = 0;
            }
        }<\/p>\n

        private void textBox1_MouseEnter(object sender, EventArgs e)
        {
            this.timer1.Stop();
        }<\/p>\n

        private void textBox1_MouseLeave(object sender, EventArgs e)
        {
            this.timer1.Start();
        }
    }
}
<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

using System;using System.Collecti...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-215","post","type-post","status-publish","format-standard","hentry","category-NET"],"_links":{"self":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/215","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=215"}],"version-history":[{"count":0,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/215\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}