public void RemoveHook()
{
try
{
if (m_iKeyBoardHook != 0)
{
bool bReturnKeyboard = true;
bReturnKeyboard = GlobalHookHelpers.UnhookWindowsHookEx(m_iKeyBoardHook);
m_iKeyBoardHook = 0;
}
}
catch (Exception)
{
}
}
public void InstallKeyBoardHook()
{
try
{
if (m_iKeyBoardHook == 0)
{
m_KeyboardHookProcedure = new HookProc(KeyboardHookProc);
m_iKeyBoardHook = GlobalHookHelpers.SetWindowsHookEx(GlobalHookHelpers.WH_KEYBOARD_LL,
m_KeyboardHookProcedure,
Marshal.GetHINSTANCE(
Assembly.GetExecutingAssembly().GetModules()[0]), 0);
}
}
catch (Exception)
{
}
}
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (nCode >= 0 && OnKeyDown != null && OnKeyUp != null)
{
GlobalHookHelpers.KeyboardHookStruct myKeyBoardStruct = (GlobalHookHelpers.KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(GlobalHookHelpers.KeyboardHookStruct));
if (OnKeyDown != null && (wParam == GlobalHookHelpers.WM_KEYDOWN ||
wParam == GlobalHookHelpers.WM_SYSKEYDOWN))
{
Keys myKeyData = (Keys)myKeyBoardStruct.vkCode;
KeyEventArgs myKeyEventArgs = new KeyEventArgs(myKeyData);
this.OnKeyDown(this, myKeyEventArgs);
}
if (OnKeyUp != null && (wParam == GlobalHookHelpers.WM_KEYUP ||
wParam == GlobalHookHelpers.WM_SYSKEYUP))
{
Keys myKeyData = (Keys)myKeyBoardStruct.vkCode;
KeyEventArgs myKeyEventArgs = new KeyEventArgs(myKeyData);
this.OnKeyUp(this, myKeyEventArgs);
}
}
return(GlobalHookHelpers.CallNextHookEx(m_iKeyBoardHook, nCode, wParam, lParam));
}