求解 这段代码 的意思

Question

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Controls
{
    public class RichEdit50 : RichTextBox
    {
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr LoadLibrary(string lpFileName);

        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams prams = base.CreateParams;
                if (LoadLibrary("msftedit.dll") != IntPtr.Zero)
                {
                    prams.ExStyle |= 0x020; // transparent 
                    prams.ClassName = "RICHEDIT50W";
                }
                return prams;
            }
        }
    }
}

 

原文链接http://topic.csdn.net/u/20080915/18/8a8d5141-59a0-444d-afb8-179e805eb7a3.html其中加载的dll名称是怎么知道的，如果把RichBox换成TextBox为何不行？不要if判断直接

 CreateParams prams = base.CreateParams;        
prams.ExStyle |= 0x020; // transparent 
  prams.ClassName = "RICHEDIT50W";
  为何不行？

 

Answer 1

override CreateParams CreateParams  你得确保TxtBox里有这个方法可以让它得重写呀。