C#通过代码的方式模拟键盘按下

2023-11-27 00:27| 来源: 网络整理| 查看: 265

本文转自：

https://www.cnblogs.com/xielong/p/6763121.html

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 键空格键 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 = 18; // 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 = 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 ; //数字键盘0到9 public const byte vbKey0 = 48 ; // 0 键 public const byte vbKey1 = 49 ; // 1 键 public const byte vbKey2 = 50 ; // 2 键 public const byte vbKey3 = 51 ; // 3 键 public const byte vbKey4 = 52 ; // 4 键 public const byte vbKey5 = 53 ; // 5 键 public const byte vbKey6 = 54 ; // 6 键 public const byte vbKey7 = 55 ; // 7 键 public const byte vbKey8 = 56 ; // 8 键 public const byte vbKey9 = 57 ; // 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 /// /// 导入模拟键盘的方法 /// /// 按键的虚拟键值 /// 扫描码，一般不用设置，用0代替就行 /// 选项标志：0：表示按下，2：表示松开 /// 一般设置为0 [DllImport("user32.dll")] public static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo); #endregion

3、使用例子

2）按钮方法

/// /// 默认按下ctrl+shift切换输入法 /// /// /// private void button1_Click(object sender, EventArgs e) { //模拟按下ctrl键 keybd_event(vbKeyControl, 0,0,0); //模拟按下shift键 keybd_event(vbKeyShift, 0, 0, 0); //松开按键ctrl keybd_event(vbKeyControl, 0, 2, 0); //松开按键shift keybd_event(vbKeyShift, 0, 2, 0); } /// /// 使用QQ的截图快捷按键（前提：开启QQ） /// /// /// private void button2_Click(object sender, EventArgs e) { //模拟按下ctrl键 keybd_event(vbKeyControl, 0, 0, 0); //模拟按下Alt键 keybd_event(vbKeyAlt, 0, 0, 0); //模拟按下A键 keybd_event(vbKeyA, 0, 0, 0); //模拟松开ctrl键 keybd_event(vbKeyControl, 0, 2, 0); //模拟松开Alt键 keybd_event(vbKeyAlt, 0, 2, 0); //模拟松开A键 keybd_event(vbKeyA, 0, 2, 0); } /// /// 模拟 Alt+F4按键关闭窗体程序 /// /// /// private void button3_Click(object sender, EventArgs e) { //模拟按下Alt键 keybd_event(vbKeyAlt, 0, 0, 0); //模拟按下F4键 keybd_event(vbKeyF4, 0, 0, 0); //松开按键Alt keybd_event(vbKeyAlt, 0, 2, 0); //松开按键F4 keybd_event(vbKeyF4, 0, 2, 0); } /// /// 模拟Ctrl+Alt+Z按键显示已最小化QQ界面 /// /// /// private void button4_Click(object sender, EventArgs e) { //模拟按下ctrl键 keybd_event(vbKeyControl, 0, 0, 0); //模拟按下Alt键 keybd_event(vbKeyAlt, 0, 0, 0); //模拟按下Z键 keybd_event(vbKeyZ, 0, 0, 0); //模拟松开ctrl键 keybd_event(vbKeyControl, 0, 2, 0); //模拟松开Alt键 keybd_event(vbKeyAlt, 0, 2, 0); //模拟松开Z键 keybd_event(vbKeyZ, 0, 2, 0); }

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 = 18; // 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 = 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 ; //数字键盘0到9 public const byte vbKey0 = 48 ; // 0 键 public const byte vbKey1 = 49 ; // 1 键 public const byte vbKey2 = 50 ; // 2 键 public const byte vbKey3 = 51 ; // 3 键 public const byte vbKey4 = 52 ; // 4 键 public const byte vbKey5 = 53 ; // 5 键 public const byte vbKey6 = 54 ; // 6 键 public const byte vbKey7 = 55 ; // 7 键 public const byte vbKey8 = 56 ; // 8 键 public const byte vbKey9 = 57 ; // 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 /// /// 导入模拟键盘的方法 /// /// 按键的虚拟键值 /// 扫描码，一般不用设置，用0代替就行 /// 选项标志：0：表示按下，2：表示松开 /// 一般设置为0 [DllImport("user32.dll")] public static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo); #endregion /// /// 默认按下ctrl+shift切换输入法 /// /// /// private void button1_Click(object sender, EventArgs e) { //模拟按下ctrl键 keybd_event(vbKeyControl, 0,0,0); //模拟按下shift键 keybd_event(vbKeyShift, 0, 0, 0); //松开按键ctrl keybd_event(vbKeyControl, 0, 2, 0); //松开按键shift keybd_event(vbKeyShift, 0, 2, 0); } /// /// 使用QQ的截图快捷按键（前提：开启QQ） /// /// /// private void button2_Click(object sender, EventArgs e) { //模拟按下ctrl键 keybd_event(vbKeyControl, 0, 0, 0); //模拟按下Alt键 keybd_event(vbKeyAlt, 0, 0, 0); //模拟按下A键 keybd_event(vbKeyA, 0, 0, 0); //模拟松开ctrl键 keybd_event(vbKeyControl, 0, 2, 0); //模拟松开Alt键 keybd_event(vbKeyAlt, 0, 2, 0); //模拟松开A键 keybd_event(vbKeyA, 0, 2, 0); } /// /// 模拟 Alt+F4按键关闭窗体程序 /// /// /// private void button3_Click(object sender, EventArgs e) { //模拟按下Alt键 keybd_event(vbKeyAlt, 0, 0, 0); //模拟按下F4键 keybd_event(vbKeyF4, 0, 0, 0); //松开按键Alt keybd_event(vbKeyAlt, 0, 2, 0); //松开按键F4 keybd_event(vbKeyF4, 0, 2, 0); } /// /// 模拟Ctrl+Alt+Z按键显示已最小化QQ界面 /// /// /// private void button4_Click(object sender, EventArgs e) { //模拟按下ctrl键 keybd_event(vbKeyControl, 0, 0, 0); //模拟按下Alt键 keybd_event(vbKeyAlt, 0, 0, 0); //模拟按下Z键 keybd_event(vbKeyZ, 0, 0, 0); //模拟松开ctrl键 keybd_event(vbKeyControl, 0, 2, 0); //模拟松开Alt键 keybd_event(vbKeyAlt, 0, 2, 0); //模拟松开Z键 keybd_event(vbKeyZ, 0, 2, 0); } } }

5、执行后效果图

1）模拟QQ截图按键

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