基线 SVN r240

SVN-Revision: r240
2025-02-06 06:46:06 +00:00
commit ab56a9bcf7
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+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+using static WindowsFormsApplication1.Win32Api;
+namespace WindowsFormsApplication1
+{
+    /**
+     * c#钩子程序 键盘监控(拦截系统组合键)
+     * */
+    public class Win32Api
+    {
+        #region 常数和结构
+        public const int WM_KEYDOWN = 0x100;
+
+        public const int WM_KEYUP = 0x101;
+
+        public const int WM_SYSKEYDOWN = 0x104;
+
+        public const int WM_SYSKEYUP = 0x105;
+
+        public const int WH_KEYBOARD_LL = 13;
+
+        [StructLayout(LayoutKind.Sequential)] //声明键盘钩子的封送结构类型 
+
+        public class KeyboardHookStruct
+        {
+            public int vkCode; //表示一个在1到254间的虚似键盘码 
+            public int scanCode; //表示硬件扫描码 
+            public int flags;
+            public int time;
+            public int dwExtraInfo;
+        }
+
+        #endregion
+        #region Api
+
+        public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);
+
+        //安装钩子的函数 
+        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
+
+        //卸下钩子的函数 
+        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        public static extern bool UnhookWindowsHookEx(int idHook);
+
+        //下一个钩挂的函数 
+        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);
+
+        [DllImport("user32")]
+        public static extern int ToAscii(int uVirtKey, int uScanCode, byte[] lpbKeyState, byte[] lpwTransKey, int fuState);
+
+        [DllImport("user32")]
+        public static extern int GetKeyboardState(byte[] pbKeyState);
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        public static extern IntPtr GetModuleHandle(string lpModuleName);
+
+        #endregion
+    }
+
+    public class KeyboardHook
+    {
+        int hHook;
+
+        Win32Api.HookProc KeyboardHookDelegate;
+
+        public event KeyEventHandler OnKeyDownEvent;
+
+        public event KeyEventHandler OnKeyUpEvent;
+
+        public event KeyPressEventHandler OnKeyPressEvent;
+
+        /// <summary>
+        /// 正在执行回车事件中
+        /// </summary>
+        public bool IsExecute = false;
+
+        public KeyboardHook() { }
+
+        /**
+         * 设置钩子
+         * */
+        public void SetHook()
+        {
+            KeyboardHookDelegate = new Win32Api.HookProc(KeyboardHookProc);
+            Process cProcess = Process.GetCurrentProcess();
+            ProcessModule cModule = cProcess.MainModule;
+            var mh = Win32Api.GetModuleHandle(cModule.ModuleName);
+            hHook = Win32Api.SetWindowsHookEx(Win32Api.WH_KEYBOARD_LL, KeyboardHookDelegate, mh, 0);
+        }
+
+        /**
+         * 卸载钩子
+         * */
+        public void UnHook()
+        {
+            Win32Api.UnhookWindowsHookEx(hHook);
+        }
+
+        /**
+         * 拦截按键
+         * nCode参数是钩子代码，钩子子程使用这个参数来确定任务，这个参数的值依赖于Hook类型。
+         * wParam和lParam参数包含了消息信息，我们可以从中提取需要的信息。
+         * */
+        private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
+        {
+            
+            if (nCode >= 0)
+            {
+                KeyboardHookStruct kbh = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
+
+                if (kbh.vkCode == 13&& IsExecute)
+                {
+                    return 1;
+                }
+
+            }
+            return Win32Api.CallNextHookEx(hHook, nCode, wParam, lParam);
+        }
+    }
+}