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  • C# 两个API函数.[关于插入光标]

    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; //调用API,需要引用这个命名空间
    
    namespace WindowsFormsApplication2
    {
        public partial class Form1 : Form
        {
    
    
            /// <summary>
            /// 两个API函数,其作用是:指定窗口的指定位置插入插入符.
            /// </summary>
            /// <param name="hwnd">窗口句柄</param>
            /// <param name="hBitmap">插入符的样式,可以为NULL</param>
            /// <param name="nWidth">插入符的宽度</param>
            /// <param name="nHeight">插入符的高度</param>
            /// <returns></returns>
    
            [DllImport("user32.dll", EntryPoint = "CreateCaret")]
            static extern int CreateCaret(IntPtr hwnd, int hBitmap, int nWidth, int nHeight);
    
            /// <summary>
            /// 显示插入符
            /// </summary>
            /// <param name="hWnd">窗口句柄</param>
            /// <returns></returns>
            [DllImport("user32.dll", EntryPoint = "ShowCaret")]
            static extern bool ShowCaret(IntPtr hWnd);       
            
            
            public Form1()
            {
                InitializeComponent();
            }
    
    
            private void button2_Click(object sender, EventArgs e)
            {
                CreateCaret(this.Handle, 1, 20, 40);
                ShowCaret(this.Handle);
                
            }
    
    
        }
    
    
        
    
    }
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  • 原文地址:https://www.cnblogs.com/webcyz/p/2843429.html
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