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Mesaj icon Konu: KeyboardHook Sorunu Yanıt Yaz Yeni Konu Gönder
   

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darknesss134
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Kayıt Tarihi: 30 Temmuz 2011
Konum: Turkey
Aktif Durum: Aktif Değil
Gönderilenler: 50
Alıntı darknesss134 Cevaplabullet Konu: KeyboardHook Sorunu
    Gönderim Zamanı: 02 Ağustos 2011 Saat 10:03
Merhaba;
direk konuya giriyorum kodlar aşağıdaki gibi ancak çalıştırdıktan 20 25 sn sonra program hata veriyor "               
Application.Run(new Form1());'ı gösteriyor ama hatayı anlamadım gitti sorun sizce nerede ?

-----------------------------------
globalKeyboardHook.cs
-----------------------------------

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Utilities {
     /// <summary>
     /// A class that manages a global low level keyboard hook
     /// </summary>
     class globalKeyboardHook {
          #region Constant, Structure and Delegate Definitions
          /// <summary>
          /// defines the callback type for the hook
          /// </summary>
          public delegate int keyboardHookProc(int code, int wParam, ref keyboardHookStruct lParam);

          public struct keyboardHookStruct {
               public int vkCode;
               public int scanCode;
               public int flags;
               public int time;
               public int dwExtraInfo;
          }

          const int WH_KEYBOARD_LL = 13;
          const int WM_KEYDOWN = 0x100;
          const int WM_KEYUP = 0x101;
          const int WM_SYSKEYDOWN = 0x104;
          const int WM_SYSKEYUP = 0x105;
          #endregion

          #region Instance Variables
          /// <summary>
          /// The collections of keys to watch for
          /// </summary>
          public List<Keys> HookedKeys = new List<Keys>();
          /// <summary>
          /// Handle to the hook, need this to unhook and call the next hook
          /// </summary>
          IntPtr hhook = IntPtr.Zero;
          #endregion

          #region Events
          /// <summary>
          /// Occurs when one of the hooked keys is pressed
          /// </summary>
          public event KeyEventHandler KeyDown;
          /// <summary>
          /// Occurs when one of the hooked keys is released
          /// </summary>
          public event KeyEventHandler KeyUp;
          #endregion

          #region Constructors and Destructors
          /// <summary>
          /// Initializes a new instance of the <see cref="globalKeyboardHook"/> class and installs the keyboard hook.
          /// </summary>
          public globalKeyboardHook() {
               hook();
          }

          /// <summary>
          /// Releases unmanaged resources and performs other cleanup operations before the
          /// <see cref="globalKeyboardHook"/> is reclaimed by garbage collection and uninstalls the keyboard hook.
          /// </summary>
          ~globalKeyboardHook() {
               unhook();
          }
          #endregion

          #region Public Methods
          /// <summary>
          /// Installs the global hook
          /// </summary>
          public void hook() {
               IntPtr hInstance = LoadLibrary("User32");
               hhook = SetWindowsHookEx(WH_KEYBOARD_LL, hookProc, hInstance, 0);
          }

          /// <summary>
          /// Uninstalls the global hook
          /// </summary>
          public void unhook() {
               UnhookWindowsHookEx(hhook);
          }

          /// <summary>
          /// The callback for the keyboard hook
          /// </summary>
          /// <param name="code">The hook code, if it isn't >= 0, the function shouldn't do anyting</param>
          /// <param name="wParam">The event type</param>
          /// <param name="lParam">The keyhook event information</param>
          /// <returns></returns>
          public int hookProc(int code, int wParam, ref keyboardHookStruct lParam) {
               if (code >= 0) {
                    Keys key = (Keys)lParam.vkCode;
                    if (HookedKeys.Contains(key)) {
                         KeyEventArgs kea = new KeyEventArgs(key);
                         if ((wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN) && (KeyDown != null)) {
                              KeyDown(this, kea) ;
                         } else if ((wParam == WM_KEYUP || wParam == WM_SYSKEYUP) && (KeyUp != null)) {
                              KeyUp(this, kea);
                         }
                         if (kea.Handled)
                              return 1;
                    }
               }
               return CallNextHookEx(hhook, code, wParam, ref lParam);
          }
          #endregion

          #region DLL imports
          /// <summary>
          /// Sets the windows hook, do the desired event, one of hInstance or threadId must be non-null
          /// </summary>
          /// <param name="idHook">The id of the event you want to hook</param>
          /// <param name="callback">The callback.</param>
          /// <param name="hInstance">The handle you want to attach the event to, can be null</param>
          /// <param name="threadId">The thread you want to attach the event to, can be null</param>
          /// <returns>a handle to the desired hook</returns>
          [DllImport("user32.dll")]
          static extern IntPtr SetWindowsHookEx(int idHook, keyboardHookProc callback, IntPtr hInstance, uint threadId);

          /// <summary>
          /// Unhooks the windows hook.
          /// </summary>
          /// <param name="hInstance">The hook handle that was returned from SetWindowsHookEx</param>
          /// <returns>True if successful, false otherwise</returns>
          [DllImport("user32.dll")]
          static extern bool UnhookWindowsHookEx(IntPtr hInstance);

          /// <summary>
          /// Calls the next hook.
          /// </summary>
          /// <param name="idHook">The hook id</param>
          /// <param name="nCode">The hook code</param>
          /// <param name="wParam">The wparam.</param>
          /// <param name="lParam">The lparam.</param>
          /// <returns></returns>
          [DllImport("user32.dll")]
          static extern int CallNextHookEx(IntPtr idHook, int nCode, int wParam, ref keyboardHookStruct lParam);

          /// <summary>
          /// Loads the library.
          /// </summary>
          /// <param name="lpFileName">Name of the library</param>
          /// <returns>A handle to the library</returns>
          [DllImport("kernel32.dll")]
          static extern IntPtr LoadLibrary(string lpFileName);
          #endregion
     }
}



-----------------------------------
Form1.cs
-----------------------------------

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Utilities;

namespace key_preview {
     public partial class Form1 : Form {
          globalKeyboardHook gkh = new globalKeyboardHook();

          public Form1() {
               InitializeComponent();
          }

          private void Form1_Load(object sender, EventArgs e) {
               gkh.HookedKeys.Add(Keys.Scroll);
               gkh.KeyDown += new KeyEventHandler(gkh_KeyDown);
          }

          void gkh_KeyDown(object sender, KeyEventArgs e)
        {
            if(e.KeyCode==Keys.Scroll)
            {
            Close();
            }
          }
     }
}

-----------------------------------


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