C#窗体模拟键盘按键（组合键）产生事件 ---- 通过keybd_event()函数
如何模拟键盘按键触发产生的事件，比如模拟按下Alt + F4 关闭当前程序，Ctrl+Shift 切换输入法等
可以通过win32api 键盘事件 keybd_event() 来实现
1、定义键盘按键对应得键码
#region bVk参数 常量定义
public const byte vbKeyLButton = 0x1; // 鼠标左键
public const byte vbKeyRButton = 0x2; // 鼠标右键
public const byte vbKeyCancel = 0x3; // CANCEL 键
public const byte vbKeyMButton = 0x4; // 鼠标中键
public const byte vbKeyBack = 0x8; // BACKSPACE 键
public const byte vbKeyTab = 0x9; // TAB 键
public const byte vbKeyClear = 0xC; // CLEAR 键
public const byte vbKeyReturn = 0xD; // ENTER 键
public const byte vbKeyShift = 0x10; // SHIFT 键
public const byte vbKeyControl = 0x11; // CTRL 键
public const byte vbKeyAlt = ; // Alt 键 (键码18)
public const byte vbKeyMenu = 0x12; // MENU 键
public const byte vbKeyPause = 0x13; // PAUSE 键
public const byte vbKeyCapital = 0x14; // CAPS LOCK 键
public const byte vbKeyEscape = 0x1B; // ESC 键
public const byte vbKeySpace = 0x20; // SPACEBAR 键
public const byte vbKeyPageUp = 0x21; // PAGE UP 键
public const byte vbKeyEnd = 0x23; // End 键
public const byte vbKeyHome = 0x24; // HOME 键
public const byte vbKeyLeft = 0x25; // LEFT ARROW 键
public const byte vbKeyUp = 0x26; // UP ARROW 键
public const byte vbKeyRight = 0x27; // RIGHT ARROW 键
public const byte vbKeyDown = 0x28; // DOWN ARROW 键
public const byte vbKeySelect = 0x29; // Select 键
public const byte vbKeyPrint = 0x2A; // PRINT SCREEN 键
public const byte vbKeyExecute = 0x2B; // EXECUTE 键
public const byte vbKeySnapshot = 0x2C; // SNAPSHOT 键
public const byte vbKeyDelete = 0x2E; // Delete 键
public const byte vbKeyHelp = 0x2F; // HELP 键
public const byte vbKeyNumlock = 0x90; // NUM LOCK 键
//常用键 字母键A到Z
public const byte vbKeyA = ;
public const byte vbKeyB = ;
public const byte vbKeyC = ;
public const byte vbKeyD = ;
public const byte vbKeyE = ;
public const byte vbKeyF = ;
public const byte vbKeyG = ;
public const byte vbKeyH = ;
public const byte vbKeyI = ;
public const byte vbKeyJ = ;
public const byte vbKeyK = ;
public const byte vbKeyL = ;
public const byte vbKeyM = ;
public const byte vbKeyN = ;
public const byte vbKeyO = ;
public const byte vbKeyP = ;
public const byte vbKeyQ = ;
public const byte vbKeyR = ;
public const byte vbKeyS = ;
public const byte vbKeyT = ;
public const byte vbKeyU = ;
public const byte vbKeyV = ;
public const byte vbKeyW = ;
public const byte vbKeyX = ;
public const byte vbKeyY = ;
public const byte vbKeyZ = ;
//数字键盘0到9
public const byte vbKey0 = ; // 0 键
public const byte vbKey1 = ; // 1 键
public const byte vbKey2 = ; // 2 键
public const byte vbKey3 = ; // 3 键
public const byte vbKey4 = ; // 4 键
public const byte vbKey5 = ; // 5 键
public const byte vbKey6 = ; // 6 键
public const byte vbKey7 = ; // 7 键
public const byte vbKey8 = ; // 8 键
public const byte vbKey9 = ; // 9 键
public const byte vbKeyNumpad0 = 0x60 ; //0 键
public const byte vbKeyNumpad1 = 0x61 ; //1 键
public const byte vbKeyNumpad2 = 0x62 ; //2 键
public const byte vbKeyNumpad3 = 0x63 ; //3 键
public const byte vbKeyNumpad4 = 0x64 ; //4 键
public const byte vbKeyNumpad5 = 0x65 ; //5 键
public const byte vbKeyNumpad6 = 0x66 ; //6 键
public const byte vbKeyNumpad7 = 0x67 ; //7 键
public const byte vbKeyNumpad8 = 0x68 ; //8 键
public const byte vbKeyNumpad9 = 0x69 ; //9 键
public const byte vbKeyMultiply = 0x6A ; // MULTIPLICATIONSIGN(*)键
public const byte vbKeyAdd = 0x6B ; // PLUS SIGN(+) 键
public const byte vbKeySeparator = 0x6C ; // ENTER 键
public const byte vbKeySubtract = 0x6D ; // MINUS SIGN(-) 键
public const byte vbKeyDecimal = 0x6E ; // DECIMAL POINT(.) 键
public const byte vbKeyDivide = 0x6F ; // DIVISION SIGN(/) 键
//F1到F12按键
public const byte vbKeyF1 = 0x70 ; //F1 键
public const byte vbKeyF2 = 0x71 ; //F2 键
public const byte vbKeyF3 = 0x72 ; //F3 键
public const byte vbKeyF4 = 0x73 ; //F4 键
public const byte vbKeyF5 = 0x74 ; //F5 键
public const byte vbKeyF6 = 0x75 ; //F6 键
public const byte vbKeyF7 = 0x76 ; //F7 键
public const byte vbKeyF8 = 0x77 ; //F8 键
public const byte vbKeyF9 = 0x78 ; //F9 键
public const byte vbKeyF10 = 0x79 ; //F10 键
public const byte vbKeyF11 = 0x7A ; //F11 键
public const byte vbKeyF12 = 0x7B ; //F12 键
#endregion
2、引用win32api键盘函数
#region 引用win32api方法
/// <summary>
/// 导入模拟键盘的方法
/// </summary>
/// <param name="bVk" >按键的虚拟键值</param>
/// <param name= "bScan" >扫描码，一般不用设置，用0代替就行</param>
/// <param name= "dwFlags" >选项标志：0：表示按下，2：表示松开</param>
/// <param name= "dwExtraInfo">一般设置为0</param>
[DllImport("user32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
#endregion
3、使用例子
1）界面设计
2）按钮方法
/// <summary>
/// 默认按下ctrl+shift切换输入法
/// </summary>
/// <param name= sender ></param>
/// <param name= e ></param>
private void button1_Click(object sender, EventArgs e)
{
//模拟按下ctrl键
keybd_event(vbKeyControl, ,,);
//模拟按下shift键
keybd_event(vbKeyShift, , , );
//松开按键ctrl
keybd_event(vbKeyControl, , , );
//松开按键shift
keybd_event(vbKeyShift, , , ); } /// <summary>
/// 使用QQ的截图快捷按键（前提：开启QQ）
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
//模拟按下ctrl键
keybd_event(vbKeyControl, , , );
//模拟按下Alt键
keybd_event(vbKeyAlt, , , );
//模拟按下A键
keybd_event(vbKeyA, , , );
//模拟松开ctrl键
keybd_event(vbKeyControl, , , );
//模拟松开Alt键
keybd_event(vbKeyAlt, , , );
//模拟松开A键
keybd_event(vbKeyA, , , );
} /// <summary>
/// 模拟 Alt+F4按键 关闭窗体程序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
//模拟按下Alt键
keybd_event(vbKeyAlt, , , );
//模拟按下F4键
keybd_event(vbKeyF4, , , );
//松开按键Alt
keybd_event(vbKeyAlt, , , );
//松开按键F4
keybd_event(vbKeyF4, , , );
} /// <summary>
/// 模拟Ctrl+Alt+Z按键 显示已最小化QQ界面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
//模拟按下ctrl键
keybd_event(vbKeyControl, , , );
//模拟按下Alt键
keybd_event(vbKeyAlt, , , );
//模拟按下Z键
keybd_event(vbKeyZ, , , );
//模拟松开ctrl键
keybd_event(vbKeyControl, , , );
//模拟松开Alt键
keybd_event(vbKeyAlt, , , );
//模拟松开Z键
keybd_event(vbKeyZ, , , );
}
4、完整源码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms; namespace WindowsForms
{
public partial class Form4 : Form
{
public Form4()
{
InitializeComponent();
} #region bVk参数 常量定义 public const byte vbKeyLButton = 0x1; // 鼠标左键
public const byte vbKeyRButton = 0x2; // 鼠标右键
public const byte vbKeyCancel = 0x3; // CANCEL 键
public const byte vbKeyMButton = 0x4; // 鼠标中键
public const byte vbKeyBack = 0x8; // BACKSPACE 键
public const byte vbKeyTab = 0x9; // TAB 键
public const byte vbKeyClear = 0xC; // CLEAR 键
public const byte vbKeyReturn = 0xD; // ENTER 键
public const byte vbKeyShift = 0x10; // SHIFT 键
public const byte vbKeyControl = 0x11; // CTRL 键
public const byte vbKeyAlt = ; // Alt 键 (键码18)
public const byte vbKeyMenu = 0x12; // MENU 键
public const byte vbKeyPause = 0x13; // PAUSE 键
public const byte vbKeyCapital = 0x14; // CAPS LOCK 键
public const byte vbKeyEscape = 0x1B; // ESC 键
public const byte vbKeySpace = 0x20; // SPACEBAR 键
public const byte vbKeyPageUp = 0x21; // PAGE UP 键
public const byte vbKeyEnd = 0x23; // End 键
public const byte vbKeyHome = 0x24; // HOME 键
public const byte vbKeyLeft = 0x25; // LEFT ARROW 键
public const byte vbKeyUp = 0x26; // UP ARROW 键
public const byte vbKeyRight = 0x27; // RIGHT ARROW 键
public const byte vbKeyDown = 0x28; // DOWN ARROW 键
public const byte vbKeySelect = 0x29; // Select 键
public const byte vbKeyPrint = 0x2A; // PRINT SCREEN 键
public const byte vbKeyExecute = 0x2B; // EXECUTE 键
public const byte vbKeySnapshot = 0x2C; // SNAPSHOT 键
public const byte vbKeyDelete = 0x2E; // Delete 键
public const byte vbKeyHelp = 0x2F; // HELP 键
public const byte vbKeyNumlock = 0x90; // NUM LOCK 键 //常用键 字母键A到Z
public const byte vbKeyA = ;
public const byte vbKeyB = ;
public const byte vbKeyC = ;
public const byte vbKeyD = ;
public const byte vbKeyE = ;
public const byte vbKeyF = ;
public const byte vbKeyG = ;
public const byte vbKeyH = ;
public const byte vbKeyI = ;
public const byte vbKeyJ = ;
public const byte vbKeyK = ;
public const byte vbKeyL = ;
public const byte vbKeyM = ;
public const byte vbKeyN = ;
public const byte vbKeyO = ;
public const byte vbKeyP = ;
public const byte vbKeyQ = ;
public const byte vbKeyR = ;
public const byte vbKeyS = ;
public const byte vbKeyT = ;
public const byte vbKeyU = ;
public const byte vbKeyV = ;
public const byte vbKeyW = ;
public const byte vbKeyX = ;
public const byte vbKeyY = ;
public const byte vbKeyZ = ; //数字键盘0到9
public const byte vbKey0 = ; // 0 键
public const byte vbKey1 = ; // 1 键
public const byte vbKey2 = ; // 2 键
public const byte vbKey3 = ; // 3 键
public const byte vbKey4 = ; // 4 键
public const byte vbKey5 = ; // 5 键
public const byte vbKey6 = ; // 6 键
public const byte vbKey7 = ; // 7 键
public const byte vbKey8 = ; // 8 键
public const byte vbKey9 = ; // 9 键 public const byte vbKeyNumpad0 = 0x60 ; //0 键
public const byte vbKeyNumpad1 = 0x61 ; //1 键
public const byte vbKeyNumpad2 = 0x62 ; //2 键
public const byte vbKeyNumpad3 = 0x63 ; //3 键
public const byte vbKeyNumpad4 = 0x64 ; //4 键
public const byte vbKeyNumpad5 = 0x65 ; //5 键
public const byte vbKeyNumpad6 = 0x66 ; //6 键
public const byte vbKeyNumpad7 = 0x67 ; //7 键
public const byte vbKeyNumpad8 = 0x68 ; //8 键
public const byte vbKeyNumpad9 = 0x69 ; //9 键
public const byte vbKeyMultiply = 0x6A ; // MULTIPLICATIONSIGN(*)键
public const byte vbKeyAdd = 0x6B ; // PLUS SIGN(+) 键
public const byte vbKeySeparator = 0x6C ; // ENTER 键
public const byte vbKeySubtract = 0x6D ; // MINUS SIGN(-) 键
public const byte vbKeyDecimal = 0x6E ; // DECIMAL POINT(.) 键
public const byte vbKeyDivide = 0x6F ; // DIVISION SIGN(/) 键 //F1到F12按键
public const byte vbKeyF1 = 0x70 ; //F1 键
public const byte vbKeyF2 = 0x71 ; //F2 键
public const byte vbKeyF3 = 0x72 ; //F3 键
public const byte vbKeyF4 = 0x73 ; //F4 键
public const byte vbKeyF5 = 0x74 ; //F5 键
public const byte vbKeyF6 = 0x75 ; //F6 键
public const byte vbKeyF7 = 0x76 ; //F7 键
public const byte vbKeyF8 = 0x77 ; //F8 键
public const byte vbKeyF9 = 0x78 ; //F9 键
public const byte vbKeyF10 = 0x79 ; //F10 键
public const byte vbKeyF11 = 0x7A ; //F11 键
public const byte vbKeyF12 = 0x7B ; //F12 键 #endregion #region 引用win32api方法 /// <summary>
/// 导入模拟键盘的方法
/// </summary>
/// <param name="bVk" >按键的虚拟键值</param>
/// <param name= "bScan" >扫描码，一般不用设置，用0代替就行</param>
/// <param name= "dwFlags" >选项标志：0：表示按下，2：表示松开</param>
/// <param name= "dwExtraInfo">一般设置为0</param>
[DllImport("user32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo); #endregion /// <summary>
/// 默认按下ctrl+shift切换输入法
/// </summary>
/// <param name= sender ></param>
/// <param name= e ></param>
private void button1_Click(object sender, EventArgs e)
{
//模拟按下ctrl键
keybd_event(vbKeyControl, ,,);
//模拟按下shift键
keybd_event(vbKeyShift, , , );
//松开按键ctrl
keybd_event(vbKeyControl, , , );
//松开按键shift
keybd_event(vbKeyShift, , , ); } /// <summary>
/// 使用QQ的截图快捷按键（前提：开启QQ）
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
//模拟按下ctrl键
keybd_event(vbKeyControl, , , );
//模拟按下Alt键
keybd_event(vbKeyAlt, , , );
//模拟按下A键
keybd_event(vbKeyA, , , );
//模拟松开ctrl键
keybd_event(vbKeyControl, , , );
//模拟松开Alt键
keybd_event(vbKeyAlt, , , );
//模拟松开A键
keybd_event(vbKeyA, , , );
} /// <summary>
/// 模拟 Alt+F4按键 关闭窗体程序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
//模拟按下Alt键
keybd_event(vbKeyAlt, , , );
//模拟按下F4键
keybd_event(vbKeyF4, , , );
//松开按键Alt
keybd_event(vbKeyAlt, , , );
//松开按键F4
keybd_event(vbKeyF4, , , );
} /// <summary>
/// 模拟Ctrl+Alt+Z按键 显示已最小化QQ界面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
//模拟按下ctrl键
keybd_event(vbKeyControl, , , );
//模拟按下Alt键
keybd_event(vbKeyAlt, , , );
//模拟按下Z键
keybd_event(vbKeyZ, , , );
//模拟松开ctrl键
keybd_event(vbKeyControl, , , );
//模拟松开Alt键
keybd_event(vbKeyAlt, , , );
//模拟松开Z键
keybd_event(vbKeyZ, , , );
}
}
}
5、执行后效果图
1）模拟QQ截图按键
Ps：其它就不显示了
出处：https://www.cnblogs.com/xielong/p/6763121.html
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