C#窗体模拟键盘按键（组合键）产生事件 ---- 通过keybd_event()函数

2022-12-13 16:33:49

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

C#窗体模拟键盘按键（组合键）产生事件 ---- 通过keybd_event()函数

   #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

码农公寓

相关文章