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POGlobal Hook Keylogger problem
 

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    <p>It logs the keys to textbox currently so its safe.</p> <p>PROBLEM The problem is when i run this at virtual machine, or my friends laptop, it hangs after pressing certain amount of keys(random).It runs perfectly fine in mine.</p> <p><a href="http://i34.tinypic.com/29o1im8.jpg" rel="noreferrer">http://i34.tinypic.com/29o1im8.jpg</a></p> <pre><code>class GlobalKeyboardHook { #region Definition of Structures, Constants and Delegates public delegate int KeyboardHookProc(int nCode, int wParam, ref GlobalKeyboardHookStruct lParam); public struct GlobalKeyboardHookStruct { public int vkCode; public int scanCode; public int flags; public int time; public int dwExtraInfo; } const int WM_KEYDOWN = 0x100; const int WM_KEYUP = 0x101; const int WM_SYSKEYDOWN = 0x104; const int WM_SYSKEYUP = 0x105; const int WH_KEYBOARD_LL = 13; #endregion #region Events public event KeyEventHandler KeyDown; public event KeyEventHandler KeyUp; #endregion #region Instance Variables public List&lt;Keys&gt; HookedKeys = new List&lt;Keys&gt;(); IntPtr hookHandle = IntPtr.Zero; #endregion #region DLL Imports [DllImport("kernel32.dll")] static extern IntPtr LoadLibrary(string lpFileName); [DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall, SetLastError = true)] static extern IntPtr SetWindowsHookEx(int hookID, KeyboardHookProc callback, IntPtr hInstance, uint threadID); [DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall, SetLastError = true)] static extern bool UnhookWindowsHookEx(IntPtr hookHandle); [DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall)] static extern int CallNextHookEx(IntPtr hookHandle, int nCode, int wParam, ref GlobalKeyboardHookStruct lParam); #endregion #region Public Methods public int hookProc(int nCode, int wParam, ref GlobalKeyboardHookStruct lParam) { if (nCode &gt;= 0) { Keys key = (Keys)lParam.vkCode; if (HookedKeys.Contains(key) == true) { KeyEventArgs kea = new KeyEventArgs(key); if ((wParam == WM_KEYUP || wParam == WM_SYSKEYUP) &amp;&amp; KeyUp != null) { KeyUp(this, kea); } else if ((wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN) &amp;&amp; KeyDown != null) { KeyDown(this, kea); } if (kea.Handled) return 1; } } return CallNextHookEx(hookHandle, nCode, wParam, ref lParam); } public void hook() { IntPtr hInstance = LoadLibrary("user32"); hookHandle = SetWindowsHookEx(WH_KEYBOARD_LL, hookProc, hInstance, 0); } public void unhook() { UnhookWindowsHookEx(hookHandle); } #endregion #region Constructors and Destructors public GlobalKeyboardHook() { hook(); } ~GlobalKeyboardHook() { unhook(); } #endregion </code></pre>
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    1. COCould you please be a little more specific? Like, where does it hang, when? Any error messages? Could you edit your questions with a minimal code example that reproduces the problem?. And try to make it a question.
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    2. COSir there seem to be no runtime error. So ive no idea which part of the code prroduces the problem. Take a look at the file i linked. It has the picture of the error -> "Keylogger is not responding".
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    3. COWell you may attach a debugger and break the process to look where it is.
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