/// <summary>
/// Gets the input locale identifier for the active application's thread. Using this combined with the ToUnicodeEx and
/// MapVirtualKeyEx enables Windows to properly translate keys based on the keyboard layout designated for the application.
/// </summary>
/// <returns>HKL</returns>
private static uint GetActiveKeyboard()
{
IntPtr hActiveWnd = ThreadNativeMethods.GetForegroundWindow(); //handle to focused window
int dwProcessId;
int hCurrentWnd = ThreadNativeMethods.GetWindowThreadProcessId(hActiveWnd, out dwProcessId); //thread of focused window
return(GetKeyboardLayout(hCurrentWnd)); //get the layout identifier for the thread whose window is focused
}
internal override int Subscribe(int hookId, HookCallback hookCallback)
{
int hookHandle = HookNativeMethods.SetWindowsHookEx(
hookId,
hookCallback,
IntPtr.Zero,
ThreadNativeMethods.GetCurrentThreadId());
if (hookHandle == 0)
{
ThrowLastUnmanagedErrorAsException();
}
return(hookHandle);
}