C#控制键盘按键的常用方法
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2020-09-03
17:43:31
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C#控制键盘按键的常用方法控制键盘按键的常用方法
主要介绍了C#控制键盘按键的常用方法,涉及C#针对键盘大写、滚动、数字的开启与锁定等功能,非常简单实用,
需要的朋友可以参考下
本文实例讲述了C#控制键盘按键的常用方法。分享给大家供大家参考。具体实现方法如下：
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 sn设置键盘大小写
{
public partial class Form1 : Form
{
const uint KEYEVENTF_EXTENDEDKEY = 0x1;
const uint KEYEVENTF_KEYUP = 0x2;
[DllImport("user32.dll")]
static extern short GetKeyState(int nVirtKey);
[DllImport("user32.dll")]
static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, uint dwExtraInfo);
public enum VirtualKeys : byte
{
VK_NUMLOCK = 0x90, //数字锁定键
VK_SCROLL = 0x91, //滚动锁定
VK_CAPITAL = 0x14, //大小写锁定
VK_A = 62
}
public Form1()
{
InitializeComponent();
}
public static bool GetState(VirtualKeys Key)
{
return (GetKeyState((int)Key)==1);
}
public static void SetState(VirtualKeys Key, bool State)
{
if (State != GetState(Key))
{
keybd_event((byte)Key, 0x45, KEYEVENTF_EXTENDEDKEY | 0, 0);
keybd_event((byte)Key, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
}
}
//开启键盘大写
private void btnOpenCAPITAL_Click(object sender, EventArgs e)
{
SetState(VirtualKeys.VK_CAPITAL, true);
}
//关闭键盘大写
private void btnCloseCAPITAL_Click(object sender, EventArgs e)
{
SetState(VirtualKeys.VK_CAPITAL, false);
}
//开启键盘滚动锁定
private void btnOpenScroll_Click(object sender, EventArgs e)
{
SetState(VirtualKeys.VK_SCROLL, true);
}
//关闭键盘滚动锁定
private void btnCloseScroll_Click(object sender, EventArgs e)
{
SetState(VirtualKeys.VK_SCROLL, false);
}
//开启键盘数字锁定键
private void btnOpenNum_Click(object sender, EventArgs e)
{
SetState(VirtualKeys.VK_NUMLOCK, true);
}
//关闭键盘数字锁定键
private void btnCloseNum_Click(object sender, EventArgs e)
{
SetState(VirtualKeys.VK_NUMLOCK, false);
}
}
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