C#窗體如何通過keybd_event()函式模擬鍵盤按鍵（組合鍵）產生事件
阿新 • • 發佈：2018-12-19
如何模擬鍵盤按鍵觸發產生的事件，比如模擬按下Alt + F4 關閉當前程式，Ctrl+Shift 切換輸入法等
可以通過win32api 鍵盤事件 keybd_event() 來實現
1、定義鍵盤按鍵對應得鍵碼
#region bVk引數 常量定義
public const byte vbKeyLButton = 0x1; // 滑鼠左鍵
public const byte vbKeyRButton = 0x2; // 滑鼠右鍵
public const byte vbKeyCancel = 0x3; // CANCEL 鍵
public const byte vbKeyMButton = 0x4; // 滑鼠中鍵
public const byte vbKeyBack = 0x8; // BACKSPACE 鍵
public const byte vbKeyTab = 0x9; // TAB 鍵
public const byte vbKeyClear = 0xC; // CLEAR 鍵
public const byte vbKeyReturn = 0xD; // ENTER 鍵
public const byte vbKeyShift = 0x10; // SHIFT 鍵
public const byte vbKeyControl = 0x11; // CTRL 鍵
public const byte vbKeyAlt = 18; // Alt 鍵 (鍵碼18)
public const byte vbKeyMenu = 0x12; // MENU 鍵
public const byte vbKeyPause = 0x13; // PAUSE 鍵
public const byte vbKeyCapital = 0x14; // CAPS LOCK 鍵
public const byte vbKeyEscape = 0x1B; // ESC 鍵
public const byte vbKeySpace = 0x20; // SPACEBAR 鍵
public const byte vbKeyPageUp = 0x21; // PAGE UP 鍵
public const byte vbKeyEnd = 0x23; // End 鍵
public const byte vbKeyHome = 0x24; // HOME 鍵
public const byte vbKeyLeft = 0x25; // LEFT ARROW 鍵
public const byte vbKeyUp = 0x26; // UP ARROW 鍵
public const byte vbKeyRight = 0x27; // RIGHT ARROW 鍵
public const byte vbKeyDown = 0x28; // DOWN ARROW 鍵
public const byte vbKeySelect = 0x29; // Select 鍵
public const byte vbKeyPrint = 0x2A; // PRINT SCREEN 鍵
public const byte vbKeyExecute = 0x2B; // EXECUTE 鍵
public const byte vbKeySnapshot = 0x2C; // SNAPSHOT 鍵
public const byte vbKeyDelete = 0x2E; // Delete 鍵
public const byte vbKeyHelp = 0x2F; // HELP 鍵
public const byte vbKeyNumlock = 0x90; // NUM LOCK 鍵
//常用鍵 字母鍵A到Z
public const byte vbKeyA = 65;
public const byte vbKeyB = 66;
public const byte vbKeyC = 67;
public const byte vbKeyD = 68;
public const byte vbKeyE = 69;
public const byte vbKeyF = 70;
public const byte vbKeyG = 71;
public const byte vbKeyH = 72;
public const byte vbKeyI = 73;
public const byte vbKeyJ = 74;
public const byte vbKeyK = 75;
public const byte vbKeyL = 76;
public const byte vbKeyM = 77;
public const byte vbKeyN = 78;
public const byte vbKeyO = 79 ;
public const byte vbKeyP = 80 ;
public const byte vbKeyQ = 81 ;
public const byte vbKeyR = 82 ;
public const byte vbKeyS = 83 ;
public const byte vbKeyT = 84 ;
public const byte vbKeyU = 85 ;
public const byte vbKeyV = 86 ;
public const byte vbKeyW = 87 ;
public const byte vbKeyX = 88 ;
public const byte vbKeyY = 89 ;
public const byte vbKeyZ = 90 ;
//數字鍵盤0到9
public const byte vbKey0 = 48 ; // 0 鍵
public const byte vbKey1 = 49 ; // 1 鍵
public const byte vbKey2 = 50 ; // 2 鍵
public const byte vbKey3 = 51 ; // 3 鍵
public const byte vbKey4 = 52 ; // 4 鍵
public const byte vbKey5 = 53 ; // 5 鍵
public const byte vbKey6 = 54 ; // 6 鍵
public const byte vbKey7 = 55 ; // 7 鍵
public const byte vbKey8 = 56 ; // 8 鍵
public const byte vbKey9 = 57 ; // 9 鍵
public const byte vbKeyNumpad0 = 0x60 ; //0 鍵
public const byte vbKeyNumpad1 = 0x61 ; //1 鍵
public const byte vbKeyNumpad2 = 0x62 ; //2 鍵
public const byte vbKeyNumpad3 = 0x63 ; //3 鍵
public const byte vbKeyNumpad4 = 0x64 ; //4 鍵
public const byte vbKeyNumpad5 = 0x65 ; //5 鍵
public const byte vbKeyNumpad6 = 0x66 ; //6 鍵
public const byte vbKeyNumpad7 = 0x67 ; //7 鍵
public const byte vbKeyNumpad8 = 0x68 ; //8 鍵
public const byte vbKeyNumpad9 = 0x69 ; //9 鍵
public const byte vbKeyMultiply = 0x6A ; // MULTIPLICATIONSIGN(*)鍵
public const byte vbKeyAdd = 0x6B ; // PLUS SIGN(+) 鍵
public const byte vbKeySeparator = 0x6C ; // ENTER 鍵
public const byte vbKeySubtract = 0x6D ; // MINUS SIGN(-) 鍵
public const byte vbKeyDecimal = 0x6E ; // DECIMAL POINT(.) 鍵
public const byte vbKeyDivide = 0x6F ; // DIVISION SIGN(/) 鍵
//F1到F12按鍵
public const byte vbKeyF1 = 0x70 ; //F1 鍵
public const byte vbKeyF2 = 0x71 ; //F2 鍵
public const byte vbKeyF3 = 0x72 ; //F3 鍵
public const byte vbKeyF4 = 0x73 ; //F4 鍵
public const byte vbKeyF5 = 0x74 ; //F5 鍵
public const byte vbKeyF6 = 0x75 ; //F6 鍵
public const byte vbKeyF7 = 0x76 ; //F7 鍵
public const byte vbKeyF8 = 0x77 ; //F8 鍵
public const byte vbKeyF9 = 0x78 ; //F9 鍵
public const byte vbKeyF10 = 0x79 ; //F10 鍵
public const byte vbKeyF11 = 0x7A ; //F11 鍵
public const byte vbKeyF12 = 0x7B ; //F12 鍵
#endregion
2、引用win32api鍵盤函式
#region 引用win32api方法
/// <summary>
/// 匯入模擬鍵盤的方法
/// </summary>
/// <param name="bVk" >按鍵的虛擬鍵值</param>
/// <param name= "bScan" >掃描碼，一般不用設定，用0代替就行</param>
/// <param name= "dwFlags" >選項標誌：0：表示按下，2：表示鬆開</param>
/// <param name= "dwExtraInfo">一般設定為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）介面設計
2）按鈕方法
/// <summary>
/// 預設按下ctrl+shift切換輸入法
/// </summary>
/// <param name= sender ></param>
/// <param name= e ></param>
private void button1_Click(object sender, EventArgs e)
{
//模擬按下ctrl鍵
keybd_event(vbKeyControl, 0,0,0);
//模擬按下shift鍵
keybd_event(vbKeyShift, 0, 0, 0);
//鬆開按鍵ctrl
keybd_event(vbKeyControl, 0, 2, 0);
//鬆開按鍵shift
keybd_event(vbKeyShift, 0, 2, 0);
}
/// <summary>
/// 使用QQ的截圖快捷按鍵（前提：開啟QQ）
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
//模擬按下ctrl鍵
keybd_event(vbKeyControl, 0, 0, 0);
//模擬按下Alt鍵
keybd_event(vbKeyAlt, 0, 0, 0);
//模擬按下A鍵
keybd_event(vbKeyA, 0, 0, 0);
//模擬鬆開ctrl鍵
keybd_event(vbKeyControl, 0, 2, 0);
//模擬鬆開Alt鍵
keybd_event(vbKeyAlt, 0, 2, 0);
//模擬鬆開A鍵
keybd_event(vbKeyA, 0, 2, 0);
}
/// <summary>
/// 模擬 Alt+F4按鍵 關閉窗體程式
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
//模擬按下Alt鍵
keybd_event(vbKeyAlt, 0, 0, 0);
//模擬按下F4鍵
keybd_event(vbKeyF4, 0, 0, 0);
//鬆開按鍵Alt
keybd_event(vbKeyAlt, 0, 2, 0);
//鬆開按鍵F4
keybd_event(vbKeyF4, 0, 2, 0);
}
/// <summary>
/// 模擬Ctrl+Alt+Z按鍵 顯示已最小化QQ介面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
//模擬按下ctrl鍵
keybd_event(vbKeyControl, 0, 0, 0);
//模擬按下Alt鍵
keybd_event(vbKeyAlt, 0, 0, 0);
//模擬按下Z鍵
keybd_event(vbKeyZ, 0, 0, 0);
//模擬鬆開ctrl鍵
keybd_event(vbKeyControl, 0, 2, 0);
//模擬鬆開Alt鍵
keybd_event(vbKeyAlt, 0, 2, 0);
//模擬鬆開Z鍵
keybd_event(vbKeyZ, 0, 2, 0);
}
4、完整原始碼
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引數 常量定義
public const byte vbKeyLButton = 0x1; // 滑鼠左鍵
public const byte vbKeyRButton = 0x2; // 滑鼠右鍵
public const byte vbKeyCancel = 0x3; // CANCEL 鍵
public const byte vbKeyMButton = 0x4; // 滑鼠中鍵
public const byte vbKeyBack = 0x8; // BACKSPACE 鍵
public const byte vbKeyTab = 0x9; // TAB 鍵
public const byte vbKeyClear = 0xC; // CLEAR 鍵
public const byte vbKeyReturn = 0xD; // ENTER 鍵
public const byte vbKeyShift = 0x10; // SHIFT 鍵
public const byte vbKeyControl = 0x11; // CTRL 鍵
public const byte vbKeyAlt = 18; // Alt 鍵 (鍵碼18)
public const byte vbKeyMenu = 0x12; // MENU 鍵
public const byte vbKeyPause = 0x13; // PAUSE 鍵
public const byte vbKeyCapital = 0x14; // CAPS LOCK 鍵
public const byte vbKeyEscape = 0x1B; // ESC 鍵
public const byte vbKeySpace = 0x20; // SPACEBAR 鍵
public const byte vbKeyPageUp = 0x21; // PAGE UP 鍵
public const byte vbKeyEnd = 0x23; // End 鍵
public const byte vbKeyHome = 0x24; // HOME 鍵
public const byte vbKeyLeft = 0x25; // LEFT ARROW 鍵
public const byte vbKeyUp = 0x26; // UP ARROW 鍵
public const byte vbKeyRight = 0x27; // RIGHT ARROW 鍵
public const byte vbKeyDown = 0x28; // DOWN ARROW 鍵
public const byte vbKeySelect = 0x29; // Select 鍵
public const byte vbKeyPrint = 0x2A; // PRINT SCREEN 鍵
public const byte vbKeyExecute = 0x2B; // EXECUTE 鍵
public const byte vbKeySnapshot = 0x2C; // SNAPSHOT 鍵
public const byte vbKeyDelete = 0x2E; // Delete 鍵
public const byte vbKeyHelp = 0x2F; // HELP 鍵
public const byte vbKeyNumlock = 0x90; // NUM LOCK 鍵
//常用鍵 字母鍵A到Z
public const byte vbKeyA = 65;
public const byte vbKeyB = 66;
public const byte vbKeyC = 67;
public const byte vbKeyD = 68;
public const byte vbKeyE = 69;
public const byte vbKeyF = 70;
public const byte vbKeyG = 71;
public const byte vbKeyH = 72;
public const byte vbKeyI = 73;
public const byte vbKeyJ = 74;
public const byte vbKeyK = 75;
public const byte vbKeyL = 76;
public const byte vbKeyM = 77;
public const byte vbKeyN = 78;
public const byte vbKeyO = 79 ;
public const byte vbKeyP = 80 ;
public const byte vbKeyQ = 81 ;
public const byte vbKeyR = 82 ;
public const byte vbKeyS = 83 ;
public const byte vbKeyT = 84 ;
public const byte vbKeyU = 85 ;
public const byte vbKeyV = 86 ;
public const byte vbKeyW = 87 ;
public const byte vbKeyX = 88 ;
public const byte vbKeyY = 89 ;
public const byte vbKeyZ = 90 ;
//數字鍵盤0到9
public const byte vbKey0 = 48 ; // 0 鍵
public const byte vbKey1 = 49 ; // 1 鍵
public const byte vbKey2 = 50 ; // 2 鍵
public const byte vbKey3 = 51 ; // 3 鍵
public const byte vbKey4 = 52 ; // 4 鍵
public const byte vbKey5 = 53 ; // 5 鍵
public const byte vbKey6 = 54 ; // 6 鍵
public const byte vbKey7 = 55 ; // 7 鍵
public const byte vbKey8 = 56 ; // 8 鍵
public const byte vbKey9 = 57 ; // 9 鍵
public const byte vbKeyNumpad0 = 0x60 ; //0 鍵
public const byte vbKeyNumpad1 = 0x61 ; //1 鍵
public const byte vbKeyNumpad2 = 0x62 ; //2 鍵
public const byte vbKeyNumpad3 = 0x63 ; //3 鍵
public const byte vbKeyNumpad4 = 0x64 ; //4 鍵
public const byte vbKeyNumpad5 = 0x65 ; //5 鍵
public const byte vbKeyNumpad6 = 0x66 ; //6 鍵
public const byte vbKeyNumpad7 = 0x67 ; //7 鍵
public const byte vbKeyNumpad8 = 0x68 ; //8 鍵
public const byte vbKeyNumpad9 = 0x69 ; //9 鍵
public const byte vbKeyMultiply = 0x6A ; // MULTIPLICATIONSIGN(*)鍵
public const byte vbKeyAdd = 0x6B ; // PLUS SIGN(+) 鍵
public const byte vbKeySeparator = 0x6C ; // ENTER 鍵
public const byte vbKeySubtract = 0x6D ; // MINUS SIGN(-) 鍵
public const byte vbKeyDecimal = 0x6E ; // DECIMAL POINT(.) 鍵
public const byte vbKeyDivide = 0x6F ; // DIVISION SIGN(/) 鍵
//F1到F12按鍵
public const byte vbKeyF1 = 0x70 ; //F1 鍵
public const byte vbKeyF2 = 0x71 ; //F2 鍵
public const byte vbKeyF3 = 0x72 ; //F3 鍵
public const byte vbKeyF4 = 0x73 ; //F4 鍵
public const byte vbKeyF5 = 0x74 ; //F5 鍵
public const byte vbKeyF6 = 0x75 ; //F6 鍵
public const byte vbKeyF7 = 0x76 ; //F7 鍵
public const byte vbKeyF8 = 0x77 ; //F8 鍵
public const byte vbKeyF9 = 0x78 ; //F9 鍵
public const byte vbKeyF10 = 0x79 ; //F10 鍵
public const byte vbKeyF11 = 0x7A ; //F11 鍵
public const byte vbKeyF12 = 0x7B ; //F12 鍵
#endregion
#region 引用win32api方法
/// <summary>
/// 匯入模擬鍵盤的方法
/// </summary>
/// <param name="bVk" >按鍵的虛擬鍵值</param>
/// <param name= "bScan" >掃描碼，一般不用設定，用0代替就行</param>
/// <param name= "dwFlags" >選項標誌：0：表示按下，2：表示鬆開</param>
/// <param name= "dwExtraInfo">一般設定為0</param>
[DllImport("user32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
#endregion
/// <summary>
/// 預設按下ctrl+shift切換輸入法
/// </summary>
/// <param name= sender ></param>
/// <param name= e ></param>
private void button1_Click(object sender, EventArgs e)
{
//模擬按下ctrl鍵
keybd_event(vbKeyControl, 0,0,0);
//模擬按下shift鍵
keybd_event(vbKeyShift, 0, 0, 0);
//鬆開按鍵ctrl
keybd_event(vbKeyControl, 0, 2, 0);
//鬆開按鍵shift
keybd_event(vbKeyShift, 0, 2, 0);
}
/// <summary>
/// 使用QQ的截圖快捷按鍵（前提：開啟QQ）
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
//模擬按下ctrl鍵
keybd_event(vbKeyControl, 0, 0, 0);
//模擬按下Alt鍵
keybd_event(vbKeyAlt, 0, 0, 0);
//模擬按下A鍵
keybd_event(vbKeyA, 0, 0, 0);
//模擬鬆開ctrl鍵
keybd_event(vbKeyControl, 0, 2, 0);
//模擬鬆開Alt鍵
keybd_event(vbKeyAlt, 0, 2, 0);
//模擬鬆開A鍵
keybd_event(vbKeyA, 0, 2, 0);
}
/// <summary>
/// 模擬 Alt+F4按鍵 關閉窗體程式
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
//模擬按下Alt鍵
keybd_event(vbKeyAlt, 0, 0, 0);
//模擬按下F4鍵
keybd_event(vbKeyF4, 0, 0, 0);
//鬆開按鍵Alt
keybd_event(vbKeyAlt, 0, 2, 0);
//鬆開按鍵F4
keybd_event(vbKeyF4, 0, 2, 0);
}
/// <summary>
/// 模擬Ctrl+Alt+Z按鍵 顯示已最小化QQ介面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
//模擬按下ctrl鍵
keybd_event(vbKeyControl, 0, 0, 0);
//模擬按下Alt鍵
keybd_event(vbKeyAlt, 0, 0, 0);
//模擬按下Z鍵
keybd_event(vbKeyZ, 0, 0, 0);
//模擬鬆開ctrl鍵
keybd_event(vbKeyControl, 0, 2, 0);
//模擬鬆開Alt鍵
keybd_event(vbKeyAlt, 0, 2, 0);
//模擬鬆開Z鍵
keybd_event(vbKeyZ, 0, 2, 0);
}
}
}
5、執行後效果圖
1）模擬QQ截圖按鍵
Ps：其它就不顯示了
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