//Dipose our Keyhook as it is not automatically handled by the GC
public void DisposeKeyHook()
{
if (_keyHookWindowsHandle != IntPtr.Zero)
{
if (!DLLImports.UnhookWindowsHookEx(_keyHookWindowsHandle))
{
int errorCode = Marshal.GetLastWin32Error();
throw new Win32Exception(errorCode, $"Failed to remove keyboard hooks for '{Process.GetCurrentProcess().ProcessName}'. Error {errorCode}: {new Win32Exception(Marshal.GetLastWin32Error()).Message}.");
}
_keyHookWindowsHandle = IntPtr.Zero;
_keyHookProc = null;
}
}
//An overload of the DisposeKeyHook function. After disposing the hook, we unsubscribe hookProc event from the _keyHookProc instead of setting the _KeyHookProc to null.
public void DisposeKeyHook(HookProc hookProc)
{
if (_keyHookWindowsHandle != IntPtr.Zero)
{
if (!DLLImports.UnhookWindowsHookEx(_keyHookWindowsHandle))
{
int errorCode = Marshal.GetLastWin32Error();
throw new Win32Exception(errorCode, $"Failed to remove keyboard hooks for '{Process.GetCurrentProcess().ProcessName}'. Error {errorCode}: {new Win32Exception(Marshal.GetLastWin32Error()).Message}.");
}
_keyHookWindowsHandle = IntPtr.Zero;
// ReSharper disable once DelegateSubtraction
_keyHookProc -= hookProc;
}
}