调用API 清屏

最新推荐文章于 2021-12-04 15:38:04 发布

weixin_30800987

最新推荐文章于 2021-12-04 15:38:04 发布

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CC 4.0 BY-SA版权

文章标签： runtime

原文链接：http://www.cnblogs.com/mschen/p/5421389.html

本文介绍了一个使用 C# 实现的控制台清屏功能。通过调用 kernel32.dll 中的 API 函数，该方法能够获取控制台句柄，并设置控制台光标位置，从而实现对控制台屏幕缓冲区的字符清除。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;

namespace calculate
{
    struct StdHandleEnum
    {
        public const int STD_INPUT_HANDLE = -10;
        public const int STD_OUTPUT_HANDLE = -11;
        public const int STD_ERROR_HANDLE = -12;
    };

    static class ConsoleEx
    {
        internal struct COORD
        {
            public short X;
            public short Y;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        internal struct CONSOLE_SCREEN_BUFFER_INFO
        {
            public COORD Size;
            public COORD p1;
            public short a1;
            public short w1;
            public short w2;
            public short w3;
            public short w4;
            public COORD m1;
        }

        [DllImport("kernel32.dll")]
        public static extern int GetStdHandle(int nStdHandle);

        [DllImport("kernel32.dll")]
        public static extern bool GetConsoleScreenBufferInfo(int hConsoleOutput, out CONSOLE_SCREEN_BUFFER_INFO lpConsoleScreenBufferInfo);

        [DllImport("kernel32.dll")]
        public static extern bool SetConsoleCursorPosition(int hConsoleOutput, COORD dwCursorPosition);

        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern bool FillConsoleOutputCharacter(int hConsoleOutput, short cCharacter, int nLength, COORD WriteCoord, out int lpNumberOfCharsWritten);

        public static void Clear()
        {
            CONSOLE_SCREEN_BUFFER_INFO CSBI;
            int hOut;
            int CharOut;
            COORD Home;

            hOut = GetStdHandle(StdHandleEnum.STD_OUTPUT_HANDLE);

            GetConsoleScreenBufferInfo(hOut, out CSBI);

            Home.X = 0;
            Home.Y = 0;

            FillConsoleOutputCharacter(hOut, (short)' ', CSBI.Size.X * CSBI.Size.Y, Home, out CharOut);

            SetConsoleCursorPosition(hOut, Home);
        }
    }
}

转载于:https://www.cnblogs.com/mschen/p/5421389.html